FiiO K13 R2R combines a true 24-bit R2R DAC, powerful balanced headphone amplification, Bluetooth reception, PEQ, and preamplifier functionality in one versatile desktop audio center. FiiO’s proprietary four-channel R2R DAC uses 192 precision thin-film resistors with 0.1% accuracy and 30ppm low temperature drift, delivering a rich, natural, and musical presentation. Why it stands out True 24-bit R2R conversion FIIO’s four-channel fully differential resistor-ladder DAC uses 192 precision thin-film resistors, giving listeners a genuine R2R alternative to conventional delta-sigma desktop DACs. NOS and OS playback modes Switch between non-oversampling and oversampling playback instead of being locked into one presentation. NOS prioritizes the direct R2R signal path, while OS applies digital oversampling for a different response. Strong balanced headphone amplification The 4.4mm balanced output delivers up to 2400mW + 2400mW at 32Ω in high gain, while the 6.35mm output supports conventional single-ended headphones. One hub for digital sources and stereo systems Connect computers, phones, televisions and digital transports through USB-C, Bluetooth 5.4, optical or coaxial input, then listen through headphones or feed an amplifier or active speakers through RCA or balanced XLR.Best for Desktop R2R listening with headphones Balanced stereo systems requiring XLR output Users who want Bluetooth plus USB and S/PDIF inputs Not ideal for Portable or battery-powered listening Users requiring analog audio input Driving passive speakers directly EMiUZEK Buying Notes K13 R2R accepts digital sources only; it has no RCA or XLR analog input for a turntable, cassette deck or other analog source. Bluetooth works as a receiver for audio from a phone, tablet or computer. It does not transmit audio to Bluetooth headphones or speakers. RCA and XLR are line or preamplifier outputs for an amplifier or active speakers; they cannot power passive speakers directly. The quoted 2400mW + 2400mW output is for the 4.4mm balanced connection at 32Ω in high gain. Start with low volume and choose gain according to the headphones being used. FAQ How should I choose between NOS and OS mode? NOS plays through the R2R ladder without digital oversampling and is the mode to try when you want the most direct R2R presentation. OS applies oversampling and may suit listeners who prefer a smoother, more controlled presentation. Neither mode is universally better, so you can switch between them without changing the rest of the system. Do I need a balanced headphone cable to use the K13 R2R? No. Headphones with a standard 6.35mm plug can use the single-ended output. The 4.4mm connection is for headphones wired for balanced operation and is required to access the highest quoted output power. Do not connect a single-ended plug through an unsafe balanced adapter. Can the K13 R2R be used with an amplifier or active speakers? Yes. Use the RCA output for a conventional stereo connection or XLR for a balanced connection. Select the appropriate line or preamplifier mode for the receiving equipment. Passive speakers still need a separate amplifier because the K13 R2R is not a speaker power amplifier. What sources can I connect, and what does Bluetooth not do? Computers and compatible phones can use USB-C; televisions and digital transports can use optical or coaxial output; phones, tablets and computers can stream to the unit through Bluetooth 5.4 with SBC, AAC or LDAC. Bluetooth is receive-only, and there is no analog audio input.HOW TO CONNECT Computer and wired headphones Source icon: ComputerSource: PC / MacConnection: USB-COutput connection: Headphone outputTarget icon: HeadphonesOutput: 6.35mm / 4.4mm Note: Select USB input, choose a suitable gain level and begin with the volume low. Phone or tablet and wired headphones Source icon: PhoneSource: Phone / tabletConnection: BluetoothOutput connection: Headphone outputTarget icon: HeadphonesOutput: 6.35mm / 4.4mm Note: The phone sends audio wirelessly to the K13 R2R, but the headphones remain wired. TV or digital source to a stereo system Source icon: TVSource: TV / digital transportConnection: Optical / coaxial / USB-C / BluetoothOutput connection: RCA / XLRTarget icon: Amplifier or active speakersOutput: Line output / preamplifier output Note: For television use, select PCM digital output. Passive speakers require a separate amplifier.Technical Specifications Feature Specification Product type Desktop R2R DAC and headphone amplifier DAC FIIO-developed four-channel fully differential 24-bit R2R USB controller XMOS XU316 Amplifier 2 × OPA1642 + 2 × TPA6120A Bluetooth 5.4; SBC, AAC and LDAC Digital inputs 2 × USB-C, optical and coaxial Headphone outputs 6.35mm single-ended and 4.4mm balanced Line outputs Stereo RCA and balanced XLR Maximum USB decoding PCM 384kHz/32-bit; native DSD256 Balanced power ≥2400mW + 2400mW at 32Ω Dimensions Approx. 210 × 188 × 42mm Weight Approx. 980g Power AC 100–240V or DC 12V/≥2.5A What's in the box, manuals and downloads Refer to the current FIIO K13 R2R regional packing list. Use the EMiUZEK download center or FIIO support center for manuals and firmware.

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FiiO K11 R2R is a compact desktop DAC and headphone amplifier for listeners who specifically want an affordable resistor-ladder design rather than the more conventional delta-sigma architecture used in the standard K11. Its four-channel fully differential 24-bit R2R network uses 192 precision thin-film resistors and offers selectable NOS and OS playback. USB-C, optical and coaxial inputs cover common desktop and television sources, while 6.35mm and 4.4mm headphone outputs plus RCA line and preamplifier modes allow it to serve both headphones and a stereo system.Why it stands out Affordable true R2R conversion FIIO’s four-channel fully differential 24-bit resistor ladder uses 192 precision thin-film resistors, making the K11 R2R a practical entry point for listeners who want to try R2R conversion without buying a separate high-priced DAC. NOS and OS modes with clearly different purposes NOS sends the signal through the ladder without digital oversampling, while OS upsamples to 384kHz before conversion. The two modes let you compare a more direct R2R presentation with a cleaner, more controlled alternative. Useful power across balanced and single-ended headphones The 4.4mm balanced output reaches up to 1300mW + 1300mW at 32Ω, while the 6.35mm output, three gain levels and electronic volume control support a wider range of full-size headphones and earphones. Compact DAC, headphone amplifier and preamplifier in one Use USB-C, optical or coaxial input, listen through headphones, or switch the RCA output between fixed line level and variable preamplifier mode for an external amplifier or active speakers.Best for Listeners who specifically want to try R2R and compare NOS with OS playback Compact PC or Mac headphone systems using USB-C Television headphone systems using optical PCM output Users who want one desktop unit for both headphones and RCA-equipped stereo systems Not ideal for Users who want Bluetooth reception or wireless-headphone transmission Turntables, cassette decks or other sources that require an analog input Systems that require balanced XLR line output Users seeking the lowest measured distortion and noise rather than the R2R presentation Portable use or direct connection to passive speakers EMiUZEK Buying Notes K11 R2R and the standard K11 are different sound and feature choices, not simple old and new versions. Choose the R2R model for its resistor ladder and NOS/OS modes; choose the standard K11 if conventional delta-sigma conversion and stronger measured noise and distortion performance matter more. There is no Bluetooth or analog input. Phones and computers need USB audio, while televisions and digital transports need compatible optical or coaxial output. The highest quoted 1300mW + 1300mW power is from the 4.4mm balanced output at 32Ω. The 6.35mm output has different power figures, so do not compare them as if they were identical. For very sensitive earphones, begin with low gain and low volume. Buyers who prioritize the lowest possible noise floor should compare the standard K11 before ordering. The rear RCA sockets can provide fixed line output or variable preamplifier output, but there is no balanced XLR line output and passive speakers still require a separate amplifier. FAQ Should I buy the K11 R2R or the standard K11? Choose K11 R2R if the resistor-ladder design, fuller vocal presentation and the ability to switch between NOS and OS are the main reasons for buying. The standard K11 uses a conventional delta-sigma DAC, offers digital-filter choices and has better measured distortion and noise performance. The R2R version is an alternative tuning and architecture, not an automatic upgrade in every area. What actually changes when I switch between NOS and OS? NOS avoids digital oversampling and preserves the direct R2R conversion path; many listeners choose it for a denser, more relaxed presentation. OS upsamples to 384kHz before conversion and generally presents edges and detail more cleanly. The setting does not increase amplifier power, and the preferred mode depends on the headphones and recording. Will it drive my headphones, and do I need a 4.4mm cable? A 6.35mm headphone can be used normally and does not need to be recabled. The 4.4mm balanced output provides the highest power—up to 1300mW + 1300mW at 32Ω—and is useful for compatible, less sensitive headphones. Choose low, medium or high gain according to headphone sensitivity and start with the volume low. Is the K11 R2R suitable for sensitive IEMs? It can be used with IEMs through the 6.35mm output and low gain, but the R2R model does not have the lowest noise figures in the K11 family. Extremely sensitive earphones may reveal more background noise than less sensitive headphones; buyers who consider silence between tracks the top priority should compare the standard K11. Can I use it with active speakers or an existing amplifier? Yes. Connect the rear RCA output to an amplifier or active speakers. Use LO for a fixed-level signal when another device controls volume, or PRE when you want the K11 R2R knob to control the output level. It has no XLR line output and cannot power passive speakers directly. Can I connect a television? Yes, through optical input when the television can output two-channel PCM. If there is no sound, change the TV’s digital-audio setting from Dolby or bitstream to PCM. The K11 R2R does not include HDMI ARC. Does it support Bluetooth or analog input? No. It has no Bluetooth receiver, Bluetooth transmitter or analog audio input. Available sources are USB-C, optical and coaxial digital audio. Can the coaxial socket work as a digital output? Yes, but only when USB is selected as the input. It is not a general-purpose digital pass-through for optical or coaxial input sources. Does it need a driver on Windows, Mac or a game console? Mac computers normally use USB Audio without an additional driver. Windows users may need FIIO’s USB driver for the highest sample rates and native DSD. UAC 1.0 mode improves compatibility with devices that do not support UAC 2.0, although the available formats may be reduced.HOW TO CONNECT Computer and wired headphones Source icon: ComputerSource: PC / MacConnection: USB-COutput connection: Headphone outputTarget icon: HeadphonesOutput: 6.35mm / 4.4mm Note: Select USB input, choose low, medium or high gain for the headphones, and begin with the volume low. TV and wired headphones Source icon: TVSource: TelevisionConnection: OpticalOutput connection: Headphone outputTarget icon: HeadphonesOutput: 6.35mm / 4.4mm Note: Set the television’s digital-audio output to two-channel PCM; Dolby or bitstream output may produce no sound. Digital source to amplifier or active speakers Source icon: Streaming ServiceSource: Computer / digital transportConnection: USB-C / optical / coaxialOutput connection: RCA LO / PRETarget icon: AmplifierOutput: Amplifier / active speakers Note: Use LO when the receiving device controls volume, or PRE when the K11 R2R controls volume. Passive speakers require an amplifier.Technical Specifications Feature Specification Product type Desktop DAC and headphone amplifier DAC architecture FiiO-developed four-channel fully differential 24-bit R2R resistor array Resistor network 192 precision thin-film resistors, 0.1% tolerance Operating modes NOS / OS System controller GD32F303RE USB receiver SA9312L Amplifier stage 2 × SGM8262 Volume control NJW1195A electronic volume controller USB-C decoding PCM up to 384kHz/32-bit; native DSD256 Optical decoding PCM up to 96kHz/24-bit Coaxial input decoding PCM up to 192kHz/24-bit USB Audio modes UAC 1.0 / UAC 2.0 Coaxial digital output Available only when USB is selected as the input Digital inputs USB-C, Toslink optical, coaxial RCA Headphone outputs 6.35mm single-ended; 4.4mm balanced Analog line output Stereo RCA Output modes PO: headphone output; PRE: variable RCA; LO: fixed-level RCA 6.35mm output power ≥660mW + 660mW at 16Ω; ≥460mW + 460mW at 32Ω; ≥50mW + 50mW at 300Ω Output impedance <1Ω 6.35mm SNR / noise floor ≥115dB A-weighted / <7.2μV A-weighted 6.35mm performance THD+N approx. 0.025%; dynamic range ≥107dB; crosstalk ≥72dB 4.4mm balanced output power ≥520mW + 520mW at 16Ω; ≥1300mW + 1300mW at 32Ω; ≥220mW + 220mW at 300Ω Output impedance <1.5Ω 4.4mm SNR / noise floor ≥115dB A-weighted / <14.1μV A-weighted 4.4mm performance THD+N approx. 0.025%; dynamic range ≥107dB; crosstalk ≥107dB RCA line output level 2.7Vrms RCA SNR / noise floor ≥115dB A-weighted / <5.1μV A-weighted RCA performance THD+N approx. 0.025% at 1kHz/10kΩ; dynamic range ≥107dB; crosstalk ≥111dB Power input DC 12V / 2A; no internal battery Dimensions 147 × 133 × 32.3mm Weight Approx. 420g What's in the box, manuals and downloads FiiO K11 R2R ×1 Power Adapter ×1 Power Cable ×1 USB Data Cable ×1 6.35mm Headphone Adapter ×1 Quick Start Guide ×1 Warranty Card ×1 Visit the EMiUZEK download center.

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FiiO FT1 is a wired closed-back over-ear headphone built around a 60mm dynamic driver, a nanowood-fibre composite diaphragm and natural solid-wood ear cups. Its warm, full-bodied presentation, useful passive isolation and 32Ω impedance make it suitable for everyday listening at a desk, in a shared room or with a portable player. Unlike FT1 Pro, FT1 is not an open-back planar headphone. It prioritizes stronger bass presence, reduced sound leakage and easier source matching, while including separate 3.5mm single-ended and 4.4mm balanced cables. Why it stands out 60mm nanowood-fibre dynamic driver The large driver combines a wood-fibre composite diaphragm, W-shaped suspension gasket and 25mm voice coil to deliver extended low frequencies and a smooth, full-bodied presentation. Real wood closed-back ear cups Natural black-walnut or beech shells give every pair a slightly different grain pattern, while the closed acoustic structure reduces sound leakage and provides up to 26dB of passive sound attenuation under FIIO’s test conditions. Easy matching without a powerful amplifier With 32Ω impedance and 98dB/mW sensitivity, FT1 can reach practical listening levels from many portable players, dongle DACs and desktop headphone outputs. Two complete cables included A 1.5m 3.5mm single-ended cable and a separate 1.5m 4.4mm balanced cable are supplied, both using silver-plated oxygen-free copper conductors and dual 3.5mm TRS connectors at the ear cups. Best for Listeners who want a warm, bass-present closed-back headphone Home, office and shared-room listening where reduced leakage matters Portable players, dongle DACs and compact desktop headphone systems Buyers choosing natural wood construction and replaceable cables Not ideal for Listeners seeking the open soundstage and flatter bass balance of an open-back headphone Wireless listening, active noise cancellation or headset microphone use Buyers who require a very light or highly ventilated headphone for long sessions Professional monitoring where a strictly neutral tonal balance is the priority EMiUZEK Buying Notes FT1 is a wired passive headphone. It has no Bluetooth, battery, active noise cancellation or built-in microphone. The black-walnut and beech versions use natural wood, so colour and grain will vary between individual pairs and will not exactly match product photographs. Two separate cables are included. Use the 3.5mm cable for standard outputs and the 4.4mm cable only with a true balanced headphone output. FT1 is easier to drive than FT1 Pro, but phones without a headphone jack still require a compatible USB-C or Lightning dongle DAC. FAQ Should I choose FiiO FT1 or FT1 Pro? Choose FT1 when you need a closed-back headphone with fuller bass, less leakage and easier source matching. Choose FT1 Pro when you specifically want an open-back planar design, a more spacious presentation and a flatter bass balance for quiet indoor listening. FT1 Pro is not simply a higher-grade version of the same headphone; the enclosure, driver and use case are different. What kind of sound should I expect from FT1? FT1 has a warm, energetic balance with emphasized low bass and a smooth overall presentation. It suits listeners who want weight and impact without moving to a wireless consumer headphone. Buyers seeking a lean, strictly neutral monitor or very forward upper-midrange presentation should compare other models. Does FT1 need a headphone amplifier? Not necessarily. Its 32Ω impedance and 98dB/mW sensitivity allow many portable players, dongle DACs and desktop devices to drive it adequately. A dedicated DAC/amplifier may provide cleaner volume control or additional connection choices, but purchasing a large high-power amplifier is not mandatory. Can I connect FT1 directly to a phone? Yes, if the phone has a 3.5mm headphone output. Phones without one require a compatible USB-C or Lightning dongle DAC. FT1 has no Bluetooth connection, so it cannot pair with a phone wirelessly. When should I use the 3.5mm cable or the 4.4mm cable? Use the supplied 3.5mm cable with ordinary headphone outputs and the supplied 4.4mm cable with compatible balanced outputs. Balanced operation may provide more power from some players and amplifiers, but it does not automatically guarantee better sound. Never insert the 4.4mm plug into an incompatible socket or use an unsafe balanced-to-single-ended adapter. Does the closed-back design provide active noise cancellation? No. FT1 reduces outside sound and leakage through passive acoustic isolation only; there are no microphones or electronic ANC. Low-frequency transport noise will not be cancelled in the same way as with an ANC headphone. Is FT1 suitable for gaming and voice chat? Its closed-back presentation and bass impact can work well for games, but the supplied cables do not include a microphone. Voice chat requires a separate microphone or a compatible replacement cable designed for the dual 3.5mm ear-cup connections. Can the cable be replaced? Yes. The ear cups use dual 3.5mm TRS connectors. A replacement cable must have the correct left and right wiring and sufficient connector clearance; a generic single-sided 3.5mm cable will not work. Are the wooden ear cups on every pair identical? No. Black walnut and beech are natural materials, so grain, shade and small visual variations are expected. These differences are cosmetic and make each pair visually individual. Will FT1 feel hot or heavy during long listening sessions? FT1 weighs about 340g without the cable. Its closed-back pads improve isolation but retain more heat than an open-back headphone. Comfort depends on head shape and session length, so users who are sensitive to headband pressure or warmth should factor this into the choice. Technical Specifications Feature Specification Product type Wired closed-back over-ear dynamic headphone Driver 60mm dynamic driver Diaphragm Nanowood-fibre composite with W-shaped suspension gasket Ear-cup material Natural black walnut or beech Frequency response 10Hz–40kHz Impedance 32Ω Sensitivity 98dB/mW at 1kHz; 113dB/Vrms at 1kHz Passive sound attenuation Up to 26dB under FIIO test conditions Ear-cup connectors Dual 3.5mm TRS Included cable plugs 3.5mm single-ended; 4.4mm balanced Cable material 392-core silver-plated oxygen-free copper, 24AWG Cable length Approx. 1.5m each Weight Approx. 340g without cable What's in the box, manuals and downloads FiiO FT1 Headphones ×1 Headphone Storage Bag ×1 3.5mm Single-Ended Headphone Cable ×1 4.4mm Balanced Headphone Cable ×1 3.5mm-to-6.35mm Adapter ×1 Quick Start Guide ×1 Visit the EMiUZEK download center. Additional Product Content FiiO FT1 or FT1 Pro? Feature FiiO FT1 FiiO FT1 Pro Acoustic design Closed-back Open-back Driver type 60mm dynamic Planar magnetic Sound direction Warmer with stronger bass presence Flatter bass with a more open presentation Isolation and leakage Better isolation and lower leakage Minimal isolation and clearly audible leakage Source matching Easier to drive from portable equipment Benefits more from capable amplification Choose it when You need privacy, bass weight and everyday flexibility You listen in a quiet room and prioritize openness

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FiiO BTR13 is a compact rechargeable Bluetooth receiver, USB DAC and headphone amplifier designed to add wireless playback and digital audio to wired earphones and headphones. Its physical BT/PC/PHONE switch changes both the connection method and power behaviour without requiring menu navigation. Dual CS43131 DACs, 3.5mm single-ended and 4.4mm balanced outputs, global PEQ and a colour display make it the entry-level all-rounder in FIIO’s BTR range. It is best matched with IEMs and portable headphones rather than very demanding full-size models. Why it stands out Bluetooth receiver and USB DAC in one pocket device Receive SBC, AAC, aptX, aptX Low Latency, aptX HD, aptX Adaptive or LDAC from compatible Bluetooth sources, or connect by USB-C for driver-free PCM playback up to 96kHz/24-bit. Physical BT, PC and PHONE mode switch BT mode receives wireless audio, PC mode uses USB audio and USB power, and PHONE mode uses USB audio while normally preventing the BTR13 from drawing charging power from the phone. Dual outputs with useful portable power The 3.5mm output provides up to 100mW + 100mW at 32Ω, while the 4.4mm balanced output reaches up to 220mW + 220mW for compatible earphones and headphones. Global PEQ, colour display and CTIA controls The 0.96-inch colour screen shows operating information, while FIIO Control and compatible web control provide PEQ adjustment. The 3.5mm socket also supports compatible CTIA in-line controls and microphones. Best for Using wired IEMs or portable headphones wirelessly with a phone Switching between Bluetooth, phone USB audio and computer USB audio Listeners who want 3.5mm and 4.4mm outputs in a lightweight clip-on device Users who want PEQ without buying a higher-priced BTR model Not ideal for Very demanding full-size headphones that need higher sustained power Users requiring high-resolution USB decoding above 96kHz/24-bit or native DSD Systems requiring dedicated RCA, XLR or fixed-level line outputs Sending Bluetooth audio to wireless headphones or speakers EMiUZEK Buying Notes BTR13 is a Bluetooth receiver, not a Bluetooth transmitter. It makes wired headphones wireless from the source side but cannot send audio to Bluetooth headphones. The included cable is USB-C to USB-C. Lightning iPhones require a separately purchased compatible USB-C-to-Lightning data cable for wired USB audio. The highest quoted power is available from the 4.4mm balanced output at 32Ω. Choose BTR15 or BTR17 when more power or higher USB decoding capability is required. The back clip is built into the body and is not a removable protective case. A lanyard is included, but a protective case is not listed in the standard package. FAQ Should I buy BTR13 or BTR15? Choose BTR13 when low weight, lower cost, Bluetooth, PEQ and enough power for most IEMs or portable headphones are the priorities. BTR15 adds a dedicated XMOS USB controller, supports up to PCM 384kHz/32-bit and DSD256, and provides more balanced power at 32Ω. Both support 3.5mm and 4.4mm headphones, so BTR15 is mainly the better choice for higher USB capability and additional power—not simply because it is newer. Can BTR13 transmit Bluetooth audio to wireless headphones? No. It receives Bluetooth audio from a phone, tablet or computer and plays it through wired headphones connected to the 3.5mm or 4.4mm output. It cannot act as a Bluetooth transmitter. What is the difference between BT, PC and PHONE modes? BT mode is for wireless reception. PC mode receives USB audio and takes power from the USB connection. PHONE mode receives USB audio but normally disables USB charging so the BTR13 uses its own battery and reduces the drain on the phone. If the battery becomes critically low while powered off, forced charging can still occur. Does wired USB provide higher resolution than Bluetooth? USB supports driver-free PCM playback up to 96kHz/24-bit. It can avoid Bluetooth codec compression, but BTR13 does not support the 384kHz/32-bit and DSD256 USB capability of BTR15. The audible result still depends on the source file, playback software and headphones. Can I use BTR13 with an iPhone? Bluetooth works with iPhone through AAC. For wired USB audio, USB-C iPhones can use a compatible USB-C data cable; Lightning iPhones require a separately purchased compatible USB-C-to-Lightning data cable. The included cable is USB-C to USB-C. Will the microphone and buttons on my headphone cable work? The 3.5mm output supports compatible CTIA in-line controls and microphones. This does not apply to ordinary 4.4mm balanced headphone cables, which normally carry audio only. Compatibility can vary with the cable wiring and connected phone or application. Can BTR13 connect to two phones at the same time? Yes, it supports Bluetooth multipoint pairing with two devices. Only one device supplies audio at a time; pause the first source before starting playback on the second if switching does not occur automatically. Should I use the 3.5mm or 4.4mm output? Use 3.5mm for standard headphone cables, CTIA headsets and lower power needs. Use 4.4mm only with a headphone cable wired for balanced operation when more output power is useful. Do not convert a 4.4mm balanced output to a single-ended headphone with an unsafe adapter. Can it drive full-size planar or high-impedance headphones? It can drive some efficient full-size models, but its 220mW + 220mW balanced rating at 32Ω is intended for portable use. Very insensitive planar headphones, high-impedance models requiring substantial voltage or listeners needing large volume headroom should consider BTR15, BTR17 or a desktop amplifier. Does PEQ work with Bluetooth and USB? FIIO lists 10-band PEQ and GEQ support across Bluetooth codecs and USB Audio. Settings can be managed through supported FIIO Control functions or compatible desktop web control. The web controller requires a supported browser and desktop operating system. How long does the battery last? FIIO rates battery life at about eight hours, with charging taking up to approximately two hours. Actual runtime changes with codec, output connection, volume, headphone load, screen use and PEQ settings. Can I connect BTR13 to active speakers or a car AUX input? A 3.5mm connection can feed a compatible AUX input, but BTR13 does not have a dedicated fixed-level RCA or XLR line output. Begin with low volume and adjust carefully. Car mode can coordinate power behaviour with a compatible vehicle USB connection. HOW TO CONNECT Phone to wired headphones by Bluetooth Source icon: PhoneSource: Phone / tabletConnection: BluetoothOutput connection: 3.5mm / 4.4mm headphone outputTarget icon: HeadphonesOutput: Wired IEMs / headphones Note: Select BT mode, pair the source and choose a codec supported by both devices. Phone to wired headphones by USB Source icon: PhoneSource: USB-C phoneConnection: USB-C data cableOutput connection: 3.5mm / 4.4mm headphone outputTarget icon: HeadphonesOutput: Wired IEMs / headphones Note: Select PHONE mode to use the BTR13 battery instead of normally charging from the phone. Lightning iPhones require a compatible cable purchased separately. Computer USB audio Source icon: ComputerSource: PC / MacConnection: USB-COutput connection: 3.5mm / 4.4mm headphone outputTarget icon: HeadphonesOutput: Wired IEMs / headphones Note: Select PC mode. BTR13 is driver-free and supports PCM up to 96kHz/24-bit. Technical Specifications Feature Specification Product type Portable Bluetooth receiver, USB DAC and headphone amplifier Bluetooth controller Qualcomm QCC5125 DAC 2 × Cirrus Logic CS43131 Bluetooth version 5.1 Bluetooth codecs SBC, AAC, aptX, aptX Low Latency, aptX HD, aptX Adaptive and LDAC USB DAC Driver-free PCM up to 96kHz/24-bit Headphone outputs 3.5mm single-ended; 4.4mm balanced 3.5mm output power ≥100mW + 100mW at 32Ω; ≥10mW + 10mW at 300Ω 4.4mm balanced output power ≥220mW + 220mW at 32Ω; ≥55mW + 55mW at 300Ω Signal-to-noise ratio ≥128dB, A-weighted Equalizer 10-band PEQ and GEQ In-line control CTIA controls and microphone through compatible 3.5mm headset Display 0.96-inch 80 × 160 colour IPS Operating modes BT / PC / PHONE Battery capacity 460mAh Rated battery life Approx. 8 hours Charging time Up to approx. 2 hours Dimensions Approx. 63.2 × 30 × 18.8mm including clip Weight Approx. 28.6g What's in the box, manuals and downloads FiiO BTR13 ×1 Pre-Installed Screen Protector ×1 USB-C to USB-C Data Cable ×1 Lanyard ×1 Quick Start Guide ×1 Visit the EMiUZEK download center. Additional Product Content FiiO BTR13 or BTR15? Feature FiiO BTR13 FiiO BTR15 Position Lightweight entry model Higher-performance portable model DAC 2 × CS43131 2 × ES9219MQ Maximum USB decoding PCM 96kHz/24-bit PCM 384kHz/32-bit; DSD256 3.5mm power at 32Ω 100mW + 100mW 125mW + 125mW 4.4mm power at 32Ω 220mW + 220mW 340mW + 340mW PEQ 10-band PEQ and GEQ 10-band PEQ and GEQ Weight Approx. 28.6g Approx. 37.3g Choose it when Lower weight and value matter most You need more power and higher-resolution USB decoding

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FiiO K15 is a desktop DAC, network streamer, headphone amplifier and preamplifier built for users who want one central unit for headphones and a stereo system. Dual AK4497S DACs, a fully balanced signal path and a discrete Class-AB headphone stage provide substantial output through 6.35mm, 4.4mm and 4-pin XLR connections. Eight input modes cover USB, optical, coaxial, RCA line input, 4.4mm balanced input, Bluetooth, network streaming and local USB storage. Rear RCA and balanced XLR outputs allow fixed-level DAC or variable preamplifier operation, but the K15 is not a speaker power amplifier. Why it stands out DAC, streamer, headphone amplifier and preamplifier K15 combines computer USB audio, AirPlay, Roon Ready playback, local USB storage, Bluetooth and external digital or analog sources in one desktop component. Power for IEMs and demanding headphones Five gain levels cover sensitive earphones through full-size headphones, while the 4.4mm and XLR4 balanced outputs provide up to 3000mW + 3000mW at 32Ω in Ultra High Gain. Dual AK4497S fully balanced architecture Two AKM DACs feed a fully differential analog path and discrete transistor current-boosting headphone stage, with RCA and balanced XLR outputs for integration into larger systems. Flexible control and system operation The 3.93-inch touch display, five front controls, infrared remote and FIIO Control functions provide direct access to source, gain, output and playback settings. Best for One-box desktop headphone and network-streaming systems Users switching between sensitive IEMs and demanding balanced headphones Active-speaker or amplifier systems needing RCA and balanced XLR output Systems combining digital sources, network playback and analog line inputs Not ideal for Users who need HDMI ARC for direct television control Users who want Android streaming apps installed directly on the device Portable or battery-powered listening Driving passive speakers without an external amplifier EMiUZEK Buying Notes K15 has no HDMI ARC. Connect a television through optical or coaxial output and set the TV to a supported two-channel PCM format. The 10-band PEQ does not process RCA line input or 4.4mm balanced analog input. K17 is the more suitable model when 31-band PEQ and broader processing are required. AirPlay is AirPlay 1 and is limited to 44.1kHz. Network streaming supports AirPlay and Roon Ready reception; K15 is not an Android player for installing arbitrary apps. The quoted 3000mW + 3000mW output applies to the balanced headphone outputs at 32Ω in Ultra High Gain. Use lower gain and low starting volume with sensitive earphones. FAQ Should I choose FiiO K15, K13 R2R or K17? Choose K15 when network streaming, analog inputs, balanced XLR line output and strong headphone power are needed at a lower price than K17. Choose K13 R2R when a smaller unit and resistor-ladder NOS/OS sound are more important than streaming and analog inputs. Choose K17 when you need the higher-grade AK4191 plus dual AK4499EX DAC architecture, more power, 31-band PEQ, digital outputs, trigger input and the additional system features omitted from K15. Can K15 play music without a computer? Yes. It can receive AirPlay or Roon Ready playback over Wi-Fi or Ethernet and can scan music from compatible USB storage through the rear USB-A port. It does not run general Android streaming apps directly. Does K15 support Spotify Connect, TIDAL Connect or Chromecast? FIIO officially specifies AirPlay and Roon Ready for network streaming. Do not assume native Spotify Connect, TIDAL Connect or Chromecast support unless FIIO adds it in current firmware. Those services can still be used through a compatible Roon setup, AirPlay source or separately connected streamer. What is the AirPlay limitation? K15 uses AirPlay 1 and supports up to 44.1kHz through that route. For higher-resolution network playback, use compatible Roon Ready or local playback instead of assuming AirPlay transmits the original high-resolution file unchanged. Can I connect a television through HDMI ARC? No. K15 has no HDMI input or HDMI ARC. Use optical or coaxial digital input from the television and select two-channel PCM in the TV audio settings. Dolby or bitstream output may produce no sound. Does PEQ work with every input? No. K15 provides 10-band PEQ for supported digital paths, but FIIO states that RCA line input and 4.4mm balanced analog input do not receive PEQ processing. PEQ is adjusted through the supported FIIO web workflow and control connection; it is not the 31-band system used by K17. Can it drive sensitive IEMs as well as full-size headphones? Yes. Five gain levels allow lower hardware gain for sensitive earphones and Super High or Ultra High Gain for demanding models. Begin with Low gain and minimum volume when changing headphones. The maximum rating is not the correct operating target for every headphone. Can I connect more than one headphone at the same time? The front 6.35mm, 4.4mm and XLR4 outputs share the same output priority and can operate together, but FIIO does not recommend long simultaneous use—especially with headphones of very different impedance. One headphone at a time is safer and easier to control. Can K15 power passive speakers? No. RCA and XLR are line or preamplifier outputs. Connect them to active speakers, an integrated amplifier or a separate power amplifier. Passive speakers cannot be connected directly. When should I use LO, PRE, PO or PO+PRE? Use PO for the front headphone outputs. Use LO when sending a fixed-level signal to another amplifier or preamplifier. Use PRE when the K15 volume knob should control rear RCA or XLR output. PO+PRE activates front and rear variable outputs together, so check all connected equipment before raising volume. Can I connect a turntable? Only when the turntable has a built-in phono preamplifier or an external phono stage is placed before K15. The RCA input is line level and is not a phono input. Analog inputs also bypass the K15 PEQ. Can I connect a USB hard drive for local playback? The rear USB-A port supplies up to 500mA and is intended primarily for USB flash storage. A portable hard drive that requires more current should use its own external power supply. Does Windows require a USB driver? Windows requires FIIO’s USB DAC driver for normal high-rate UAC 2.0 operation. macOS is driver-free. UAC 1.0 mode improves compatibility with devices such as PS5 and Nintendo Switch but supports fewer formats. Can I use an external linear power supply? Yes. K15 supports either its internal universal AC power supply or a compatible external 12V/at least 2.5A DC supply. Use only one power source at a time and verify polarity and specifications before connection. HOW TO CONNECT Computer and wired headphones Source icon: ComputerSource: PC / MacConnection: USB-COutput connection: Headphone outputTarget icon: HeadphonesOutput: 6.35mm / 4.4mm / XLR4 Note: Select USB and PO, choose a suitable gain level and begin with the volume low. Network streaming to headphones Source icon: Streaming ServiceSource: iPhone / iPad / Mac / Roon serverConnection: Wi-Fi / EthernetOutput connection: Headphone outputTarget icon: HeadphonesOutput: 6.35mm / 4.4mm / XLR4 Note: Connect the K15 and controller to the same network, then select Streaming mode and the appropriate AirPlay or Roon endpoint. Television to wired headphones Source icon: TVSource: TelevisionConnection: Optical / coaxial PCMOutput connection: Headphone outputTarget icon: HeadphonesOutput: 6.35mm / 4.4mm / XLR4 Note: K15 has no HDMI ARC. Set the television’s digital-audio output to two-channel PCM. Digital or analog source to a stereo system Source icon: Streaming ServiceSource: Streamer / computer / analog sourceConnection: USB / optical / coaxial / RCA / 4.4mm line inputOutput connection: RCA / XLRTarget icon: AmplifierOutput: Active speakers / amplifier Note: Use LO when another device controls volume or PRE when K15 controls volume. Passive speakers require an amplifier. Technical Specifications Feature Specification Product type Desktop DAC, network streamer, headphone amplifier and preamplifier Main processor Ingenic X2000 with ESP32-S3 MCU DAC 2 × AKM AK4497S USB controller XMOS XU316 Bluetooth controller Qualcomm QCC5125 Bluetooth codecs SBC, AAC, aptX, aptX Low Latency, aptX HD, aptX Adaptive and LDAC Operating modes USB, optical, coaxial, RCA line input, 4.4mm balanced input, Bluetooth, streaming and local playback USB decoding with PEQ off Up to PCM 768kHz/32-bit; native DSD512 Optical decoding Up to PCM 96kHz/24-bit Coaxial decoding Up to PCM 192kHz/24-bit; DSD64 DoP Streaming / local playback Up to PCM 384kHz/32-bit; DSD256 Network 2.4GHz / 5GHz Wi-Fi; Gigabit Ethernet Headphone outputs 6.35mm single-ended; 4.4mm balanced; XLR4 balanced Analog inputs Stereo RCA; 4.4mm balanced line input Line outputs Stereo RCA; balanced XLR Gain Low, Medium, High, Super High and Ultra High 6.35mm output power Up to 1400mW + 1400mW at 32Ω in Ultra High Gain Balanced output power Up to 3000mW + 3000mW at 32Ω in Ultra High Gain RCA line output level 2.4Vrms Balanced XLR output level 4.8Vrms PEQ 10-band; not available for RCA or 4.4mm analog input Display 3.93-inch 240 × 1020 touch LCD Power AC 100–240V, 50/60Hz; or DC 12V/≥2.5A Dimensions Approx. 244.6 × 213 × 66.8mm Weight Approx. 2.1kg What's in the box, manuals and downloads FiiO K15 ×1 AC Power Cord ×1 USB Data Cable ×2 Headphone Plug Adapter ×1 Infrared Remote Control ×1 Spare Fuse ×1 XLR4 Decorative Plug ×1 Remote-Control Battery ×2 (included only in specified regional packages) Quick Start Guide ×1 Warranty Card ×1 Visit the EMiUZEK download center. Additional Product Content FiiO K15 or K17? Feature FiiO K15 FiiO K17 DAC architecture 2 × AK4497S AK4191 plus 2 × AK4499EX PEQ 10-band; excludes analog inputs 31-band with dedicated DSP Maximum balanced power at 32Ω 3000mW + 3000mW Higher-output design Digital output No optical or coaxial digital output Optical and coaxial digital output 12V trigger input No Yes Ground-lift switch No dedicated lift switch Included Choose it when You want the core streaming and headphone features at lower cost You need the stronger DAC, DSP, power and system-integration features

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FiiO BR15 R2R is a high-resolution Bluetooth receiver and desktop DAC designed to upgrade modern and traditional HiFi systems. Featuring a fully differential 24-bit R2R DAC, advanced Bluetooth decoding, USB DAC functionality, and balanced XLR/RCA outputs, BR15 R2R delivers flexible high-quality digital audio connectivity for home audio systems. Why it stands out True R2R DAC Architecture BR15 R2R uses a fully differential R2R DAC design to deliver detailed and natural sound reproduction with high-resolution audio sources. High-Quality Wireless Audio Upgrade Advanced Bluetooth decoding with modern high-resolution codecs allows wireless music playback with excellent sound quality. Flexible Digital Audio Hub With USB, optical, coaxial, RCA, and XLR connectivity, BR15 R2R easily integrates into different HiFi systems. Compact Desktop HiFi Solution Its desktop design provides a simple way to add premium decoding and wireless capability to existing audio equipment. Best for Upgrading traditional amplifiers Active speaker systems Desktop HiFi setups Bluetooth high-resolution audio systems Users wanting R2R DAC performance Not ideal for Users needing a headphone amplifier Users looking for a WiFi streaming player Users requiring a speaker power amplifier Users wanting a portable DAC solution EMiUZEK Buying Notes FiiO BR15 R2R is a Bluetooth receiver and DAC, not a power amplifier. It cannot directly drive passive speakers. Connect it to an amplifier, receiver, or powered speakers for audio playback. For wireless playback, use compatible Bluetooth devices with supported codecs. FAQ Does FiiO BR15 R2R have a built-in headphone amplifier? No. BR15 R2R is mainly designed as a Bluetooth receiver and DAC with line-level outputs. Can FiiO BR15 R2R connect to an amplifier? Yes. It can connect to amplifiers through RCA or balanced XLR outputs. What DAC does FiiO BR15 R2R use? It uses a fully differential 24-bit R2R DAC architecture designed by FiiO. Does FiiO BR15 R2R support LDAC and aptX Lossless? Yes. It supports high-resolution Bluetooth codecs including LDAC and aptX Lossless. Can FiiO BR15 R2R work with active speakers? Yes. The RCA and XLR outputs allow connection to compatible powered speakers. Does FiiO BR15 R2R support USB DAC mode? Yes. It can be connected to computers through USB for high-resolution digital audio playback. Does FiiO BR15 R2R support WiFi streaming? No. BR15 R2R focuses on Bluetooth, USB, optical, and coaxial audio input rather than network streaming. HOW TO CONNECT Bluetooth HiFi Upgrade Source icon: SmartphoneSource: Bluetooth MusicConnection: BluetoothOutput connection: RCA / XLRTarget icon: Amplifier or Active SpeakersOutput: Wireless HiFi System Note: Upgrade traditional audio systems with high-quality Bluetooth playback. USB DAC Setup Source icon: ComputerSource: High Resolution MusicConnection: USBOutput connection: RCA / XLRTarget icon: AmplifierOutput: Desktop HiFi System Note: Use BR15 R2R as a desktop DAC. Digital Audio Setup Source icon: CD Player / TV / Digital SourceSource: Optical / CoaxialConnection: Digital InputOutput connection: Analog OutputTarget icon: AmplifierOutput: HiFi Audio System Note: Add high-quality DAC conversion to digital sources. Technical Specifications DAC Feature Specification DAC Architecture Fully Differential 24-bit R2R USB DAC Resolution Up to 32-bit / 384kHz DSD Support Up to DSD256 PEQ 10-band Parametric EQ Bluetooth Feature Specification Bluetooth Chip Qualcomm QCC5181 Bluetooth Version Bluetooth 5.4/6.0 class chipset LDAC Supported aptX Lossless Supported aptX Adaptive Supported AAC / SBC Supported Inputs Feature Specification USB Audio Input Supported Optical Input Supported Coaxial Input Supported Bluetooth Input Supported Outputs Feature Specification RCA Line Output Supported XLR Balanced Output Supported Optical Output Supported Coaxial Output Supported Recommended System Setup Setup Connection Amplifier Upgrade Phone → BR15 R2R → Amplifier → Speakers Active Speaker System Phone / PC → BR15 R2R → Active Speakers Desktop DAC System Computer → BR15 R2R → Amplifier → Speakers What's in the box FiiO BR15 R2R ×1 Power Cable ×1 USB Cable ×1 Remote Control ×1 User Manual ×1 Download Center Access product manuals, technical documents, and support resources. https://emiuzek.com/pages/download Additional Product Content FiiO BR15 R2R vs FiiO BR13 Feature BR15 R2R BR13 Product Position R2R Bluetooth DAC Bluetooth DAC Receiver DAC Architecture 24-bit R2R Traditional DAC Bluetooth High-resolution Bluetooth Bluetooth Receiver XLR Output Yes No RCA Output Yes Yes USB DAC Yes Limited Best Focus R2R sound + HiFi system upgrade Affordable wireless upgrade

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FiiO FT1 Pro is an open-back planar magnetic HiFi headphone designed for listeners seeking high resolution, wide soundstage, and detailed musical reproduction. Featuring a large 95×86mm planar driver, ultra-thin diaphragm, and lightweight open-back design, FT1 Pro delivers an immersive listening experience for desktop HiFi systems. Why it stands out Large Planar Magnetic Driver FT1 Pro uses a FiiO-developed 95×86mm planar driver to deliver fast response, high resolution, and detailed sound reproduction. Open-Back Sound Experience The open-back design creates a spacious and natural listening experience with a wider soundstage. Lightweight Planar Performance The 374g lightweight construction provides a balance between planar magnetic performance and long listening comfort. Balanced Connection Support With detachable cable design and balanced 4.4mm compatibility, FT1 Pro works well with modern desktop DAC and headphone amplifier systems. Best for Desktop HiFi headphone systems Audiophile music listening DAC and headphone amplifier setups Classical, jazz, vocal, and instrumental music Users seeking wide soundstage headphones Not ideal for Noisy environments requiring strong isolation Users needing wireless headphones Users looking for active noise cancellation Users wanting a compact portable headphone EMiUZEK Buying Notes FiiO FT1 Pro is an open-back planar magnetic headphone, not a wireless headphone. The open-back design provides a wider soundstage but allows sound leakage. For the best performance, pairing with a quality DAC and headphone amplifier is recommended. Balanced 4.4mm output can provide better performance with compatible equipment. FAQ Is FiiO FT1 Pro a planar magnetic headphone? Yes. FT1 Pro uses a large planar magnetic driver developed by FiiO. What is the difference between FT1 and FT1 Pro? FT1 uses a closed-back dynamic driver design, while FT1 Pro uses an open-back planar magnetic design for higher resolution and wider soundstage. Does FiiO FT1 Pro require a headphone amplifier? It can work with many devices because of its 20Ω impedance, but a quality DAC/headphone amplifier can help achieve better performance. Is FT1 Pro suitable for portable players? Yes. It can work with compatible portable players, especially devices with sufficient output power. Does FT1 Pro support balanced connection? Yes. It supports balanced connection through a compatible 4.4mm cable. Does FiiO FT1 Pro block outside noise? No. The open-back design prioritizes soundstage and natural listening rather than isolation. Is FT1 Pro good for gaming? Yes. The open soundstage can provide an immersive experience, although it is mainly designed for music listening. HOW TO CONNECT Desktop HiFi Setup Source icon: ComputerSource: High Resolution MusicConnection: USB DAC / Headphone AmplifierOutput connection: 4.4mm Balanced / 3.5mmTarget icon: FiiO FT1 ProOutput: High Resolution Headphone System Note: Pair with desktop DAC and amplifier for maximum performance. Portable Player Setup Source icon: HiFi PlayerSource: Local Music FilesConnection: 3.5mm / 4.4mm OutputTarget icon: FiiO FT1 ProOutput: Portable HiFi Listening Note: Suitable for compatible high-output portable players. Technical Specifications Headphone Feature Specification Product Type Open-Back Planar Magnetic Headphone Driver Type Planar Magnetic Driver Size 95×86mm Diaphragm Thickness 1μm Design Open-Back Audio Performance Feature Specification Frequency Response 7Hz–40kHz Impedance 20Ω Sensitivity 95dB/mW Weight Approx. 374g Connectivity Feature Specification Cable Connection Detachable Headphone Connector Dual 3.5mm TRS Plug Options 3.5mm / 4.4mm Recommended System Setup Setup Connection Desktop System Computer → DAC → Headphone Amplifier → FT1 Pro Portable System HiFi Player → FT1 Pro Balanced System DAC/Amp 4.4mm Output → FT1 Pro What's in the box FiiO FT1 Pro Headphones ×1 3.5mm Cable ×1 4.4mm Balanced Cable ×1 Carrying Case ×1 Adapter ×1 User Manual ×1 Download Center Access product manuals, technical documents, and support resources. https://emiuzek.com/pages/download Additional Product Content FiiO FT Series Comparison Feature FT1 FT1 Pro Product Type Closed-Back Dynamic Headphone Open-Back Planar Magnetic Headphone Driver Type Dynamic Planar Magnetic Sound Focus Warm and immersive Detailed and spacious Isolation Better Lower Best Use Daily listening Desktop HiFi listening

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FiiO K17 R2R is a flagship desktop HiFi DAC and headphone amplifier featuring a high-performance R2R DAC architecture and versatile digital audio connectivity. With network streaming, a large touchscreen interface, balanced headphone outputs, and powerful amplification, K17 R2R delivers a complete desktop audio solution for demanding music enthusiasts. Why it stands out Flagship R2R DAC Architecture K17 R2R uses a high-precision R2R DAC design to deliver natural, detailed, and dynamic sound reproduction for high-resolution music. Powerful Desktop Headphone Amplification The built-in amplifier section provides strong output capability for demanding headphones, including balanced 4.4mm headphone connections. Complete Digital Audio Hub With multiple digital inputs, outputs, and network streaming capabilities, K17 R2R can become the central component of a modern desktop HiFi system. Premium User Experience The large touchscreen display and flexible control options provide an intuitive way to manage music playback and system settings. Best for High-end headphone listening systems Desktop HiFi setups R2R DAC enthusiasts Audiophile digital music playback Headphone and active speaker systems Not ideal for Users looking for a portable DAC/amp Users needing a speaker power amplifier Users wanting a simple plug-and-play Bluetooth adapter Users with entry-level headphone systems EMiUZEK Buying Notes FiiO K17 R2R is a desktop DAC and headphone amplifier, not a speaker power amplifier. Passive speakers cannot be connected directly. A separate power amplifier or active speakers are required for speaker systems. Balanced headphones can take advantage of the 4.4mm output for higher performance. FAQ Does FiiO K17 R2R have a built-in amplifier? Yes. K17 R2R includes a powerful desktop headphone amplifier designed for high-performance headphones. What makes the R2R DAC different? The R2R architecture uses a precision resistor network for digital-to-analog conversion, providing a different sound character compared with traditional chip DAC designs. Can FiiO K17 R2R drive demanding headphones? Yes. The powerful desktop amplification section is designed for a wide range of high-impedance and low-sensitivity headphones. Does FiiO K17 R2R support balanced headphones? Yes. It supports balanced headphone output through the 4.4mm connection. Can FiiO K17 R2R be used with active speakers? Yes. The line outputs allow connection to powered speakers or external amplifiers. Does FiiO K17 R2R support network streaming? Yes. It supports network-based music playback and modern streaming functions. Can FiiO K17 R2R work as a USB DAC? Yes. It can connect to computers through USB for high-resolution digital audio playback. HOW TO CONNECT Desktop Headphone System Source icon: Computer / Music ServerSource: High Resolution MusicConnection: USB / NetworkOutput connection: 4.4mm Balanced / 6.35mm Headphone OutputTarget icon: HeadphonesOutput: HiFi Headphone System Note: Build a high-performance desktop headphone setup. Active Speaker System Source icon: Streaming ServiceSource: Digital MusicConnection: USB / Network / Digital InputOutput connection: RCA / XLR Line OutputTarget icon: Active SpeakersOutput: Desktop Speaker System Note: Connect K17 R2R with powered speakers. External Amplifier System Source icon: Digital SourceSource: Computer / StreamerConnection: Digital InputOutput connection: Balanced Line OutputTarget icon: Power AmplifierOutput: Full HiFi System Note: Use K17 R2R as the digital audio center. Technical Specifications DAC Feature Specification DAC Type R2R DAC Architecture DAC Resolution 27-bit R2R Audio Resolution Up to 384kHz / 32-bit DSD Support Up to DSD256 Headphone Amplifier Feature Specification Amplifier Type Desktop Headphone Amplifier Balanced Output 4.4mm Single-ended Output 6.35mm Output Mode Balanced / Single-ended Inputs Feature Specification USB DAC Supported Optical Input Supported Coaxial Input Supported Bluetooth Input Supported Network Streaming Supported Outputs Feature Specification Balanced Line Out XLR Line Out RCA Headphone Output 4.4mm / 6.35mm Wireless Feature Specification WiFi Supported Bluetooth Supported Streaming Network Playback Supported Recommended System Setup Setup Connection Headphone System Computer → K17 R2R → Headphones Active Speaker System Streaming Source → K17 R2R → Active Speakers HiFi System Digital Source → K17 R2R → Amplifier → Speakers What's in the box FiiO K17 R2R ×1 Power Cable ×1 Remote Control ×1 USB Cable ×1 User Manual ×1 Download Center Access product manuals, technical documents, and support resources. https://emiuzek.com/pages/download Additional Product Content FiiO Desktop DAC Comparison Feature K17 R2R K19 K15 Product Position Flagship R2R DAC/Amp Flagship DAC/Amp High-End Desktop DAC/Amp DAC Architecture R2R Dual DAC Chip Dual DAC Chip Headphone Amplifier Yes Yes Yes Network Streaming Yes No No Touchscreen Yes Yes Yes Best Focus R2R sound + streaming Maximum desktop performance High-performance desktop audio

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FiiO S15 is a full-width Android music streamer, DAC, digital transport and preamplifier designed to become the source component in a living-room stereo system. It plays streaming apps, network libraries and local storage, accepts external digital sources, and sends analog audio through RCA or balanced XLR to active speakers or an amplifier. The S15 combines Android 12, a Snapdragon 660 processor, AK4191 plus AK4499EX conversion, HDMI input and ARC, extensive digital input and output, removable M.2 NVMe storage and a 7.84-inch landscape touchscreen. It has no headphone amplifier and no analog input. Why it stands out Full-width Android streaming centre Install compatible Android music apps, use Pure Music mode, play from NAS and cloud libraries, or receive AirPlay, DLNA, Roon Ready and Bluetooth audio from a 430mm component designed for a standard hi-fi rack. Flagship AKM DAC and balanced preamplifier AK4191 digital processing and AK4499EX conversion feed a fully balanced analog stage with fixed or variable RCA and XLR output for active speakers, integrated amplifiers and power amplifiers. HDMI, ARC and extensive digital routing HDMI input, HDMI ARC, USB, optical, coaxial and AES inputs cover computers, televisions and digital sources, while USB, optical, coaxial, AES and HDMI I2S outputs support external DACs. Internal, removable and network storage options Use internal storage, a microSD card, USB storage, NAS services or an optional M.2 NVMe SSD in the included removable cage for a large local library. Best for Full-size stereo systems needing streaming, DAC and preamplifier functions Users who want Android apps together with HDMI ARC and local music storage Power amplifiers or active speakers with RCA or balanced XLR input Digital systems requiring AES, optical, coaxial, USB or HDMI I2S output Not ideal for Direct headphone listening because there is no headphone output Turntables, cassette decks or other sources requiring an analog input Driving passive speakers without an integrated or power amplifier Small desks or portable systems due to its 430mm width and 5.6kg weight EMiUZEK Buying Notes S15 has no headphone output. The rear 3.5mm socket is a 12V Trigger Out connection and must not be treated as a headphone jack. S15 has no analog input. A turntable requires a phono stage plus a separate analog-to-digital route, or should be connected directly to the downstream amplifier instead. The rear voltage selector must match the local AC supply before power-on. Confirm whether the unit is set for 110–120V or 220–240V. An M.2 SSD is not listed as included. The supplied cage supports compatible NVMe drives up to 2TB in 2230, 2242, 2260 and 2280 sizes. FAQ Can I connect headphones directly to the FiiO S15? No. S15 does not contain a headphone amplifier or headphone output. Connect its RCA or XLR output to a separate headphone amplifier, or use a compatible external DAC/headphone amplifier through one of the digital outputs. The rear 3.5mm socket is Trigger Out, not audio. Can S15 power passive speakers? No. RCA and XLR provide line or variable preamplifier signals only. Passive speakers require an integrated amplifier or power amplifier. Active speakers can connect directly when their input sensitivity and volume arrangement are appropriate. Can I install Spotify, TIDAL, Qobuz or Apple Music? S15 runs a customized Android 12 system and supports installation of compatible third-party applications. App availability, login methods, high-resolution support and Connect-style remote control can change with the application and firmware, so confirm the current app version rather than assuming every service behaves identically. How does S15 differ from compact streamers such as Eversolo DMP-A6 Gen 2? S15 is a full-width 430mm component and emphasizes extensive routing: HDMI input plus ARC, AES input and output, Bluetooth transmit and receive, removable M.2 cage and a flagship AKM DAC combination. Compact rivals may take less rack space and can offer a different app experience. Choose according to the connections and control workflow you will actually use, not the number of features alone. What is the difference between HDMI IN and HDMI ARC? HDMI IN accepts audio and video from a computer, disc player or set-top box and passes video to the HDMI output while S15 decodes the audio. HDMI ARC receives return audio from a compatible television through the HDMI OUT/ARC socket. ARC supports 44.1 or 48kHz, while HDMI input and output support up to 192kHz/24-bit. Can I use S15 with a turntable? Not directly. S15 has no phono or line-level analog input. Connect the turntable and phono stage to the downstream integrated amplifier, or use a separate analog-to-digital converter if the source must enter the S15 digitally. Is the M.2 SSD included? No SSD is listed in the standard package. FIIO includes the removable M.2 cage, its USB 3.0 data cable and an installation screwdriver. The cage supports compatible NVMe drives in 2230, 2242, 2260 and 2280 sizes up to 2TB. Which other storage sources can it use? S15 provides 64GB internal storage with approximately 46GB available, a microSD slot with theoretical support up to 2TB, USB-A storage connections and access to compatible network libraries through protocols including UPnP, SMB and WebDAV. Can it receive and transmit Bluetooth? Yes. Bluetooth reception supports SBC, AAC, aptX, aptX Low Latency, aptX HD, aptX Adaptive and LDAC. Bluetooth transmission supports SBC, AAC, aptX, aptX HD, LDAC and LHDC with compatible headphones or speakers. Bluetooth transmission is digital output and can mute other outputs according to the S15 priority rules. Can I use an external DAC? Yes. Digital output is available through USB, optical, coaxial, AES and HDMI I2S. HDMI I2S uses connector hardware that resembles HDMI but carries I2S audio and is not a normal HDMI connection; confirm the downstream DAC pin configuration before use. Why did the RCA and XLR outputs become silent after enabling I2S? FIIO states that enabling I2S output mutes the analog RCA and XLR outputs. Disable I2S when returning to the internal DAC and analog outputs. USB output and Bluetooth transmission also take high priority and can disable other outputs. Should I use fixed line output or preamplifier output? Use fixed line output when an integrated amplifier, preamplifier or active speaker controls volume. Use variable preamplifier output when S15 should control system volume. Before changing modes, reduce volume and confirm which device is responsible for level control to avoid an unexpectedly loud signal. Does it work with Roon, AirPlay and DLNA? FIIO lists Roon Ready, AirPlay and DLNA operating modes. Keep firmware current and connect the controller, server and S15 to the same network. Service certification and behaviour can change, so verify current firmware if a particular ecosystem is essential. Can S15 work as a USB DAC for a computer? Yes, through the front USB-C DAC port. Windows requires the FIIO USB DAC driver for full operation, while macOS is normally driver-free. USB DAC decoding supports up to PCM 768kHz/32-bit and native DSD512 under compatible settings. What should I know before connecting the S15 to mains power? Unlike an auto-ranging supply, S15 uses a rear 115V/230V selection switch. Set it to the correct local mains range before connecting power. Using the wrong setting can prevent operation or damage equipment. Is the FIIO Control app the only way to operate it? No. The front touchscreen and knobs provide direct control, and the included RM3 Bluetooth remote supports playback and volume functions after pairing. FIIO Link control differs by platform: Android supports Wi-Fi and Bluetooth control, while iOS support is more limited. HOW TO CONNECT Streaming to an amplifier or active speakers Source icon: Streaming ServiceSource: Android app / NAS / AirPlay / Roon / DLNAConnection: Wi-Fi / EthernetOutput connection: RCA / XLRTarget icon: AmplifierOutput: Integrated amplifier / power amplifier / active speakers Note: Use fixed line output when the downstream device controls volume or preamplifier output when S15 controls volume. Television through HDMI ARC Source icon: TVSource: ARC-compatible televisionConnection: HDMI OUT / ARCOutput connection: RCA / XLRTarget icon: AmplifierOutput: Amplifier / active speakers Note: Enable ARC on the television and select HDMI ARC mode on S15. ARC audio is normally 44.1 or 48kHz. Computer as a USB audio source Source icon: ComputerSource: PC / MacConnection: Front USB-C DAC portOutput connection: RCA / XLRTarget icon: AmplifierOutput: Amplifier / active speakers Note: Windows requires the FIIO USB DAC driver; macOS is normally driver-free. S15 as a digital transport Source icon: Streaming ServiceSource: S15 apps / network / local storageConnection: USB / optical / coaxial / AES / HDMI I2S outputOutput connection: Digital outputTarget icon: DACOutput: External DAC Note: HDMI I2S is not ordinary HDMI. Match the I2S pin configuration, and remember that enabling I2S mutes the analog outputs. Technical Specifications Feature Specification Product type Full-size Android streamer, DAC, digital transport and preamplifier Processor / operating system Qualcomm Snapdragon 660 / Android 12 Memory / internal storage 4GB RAM / 64GB storage, approx. 46GB available DAC AKM AK4191 + AK4499EX USB controller XMOS XU316 Bluetooth controller Qualcomm QCC5125 Bluetooth Receive 5.1; transmit 5.0 USB DAC decoding Up to PCM 768kHz/32-bit; native DSD512 Native playback Up to PCM 384kHz/32-bit; native DSD256 Digital inputs USB-C, optical, coaxial, AES, HDMI IN and HDMI ARC Digital outputs USB, optical, coaxial, AES and HDMI I2S Analog outputs Stereo RCA and balanced XLR; fixed or variable Headphone output None Analog input None Network 2.4GHz / 5GHz Wi-Fi; 100Mbps Ethernet Expandable storage microSD up to 2TB theoretical; M.2 NVMe SSD up to 2TB M.2 sizes 2230, 2242, 2260 and 2280 Display 7.84-inch 400 × 1280 touch display RCA line / pre output 2.4Vrms fixed; up to 4.5Vrms variable XLR line / pre output 4.8Vrms fixed; up to 8.9Vrms variable Trigger output 3.5mm 12V Trigger Out Power Selectable AC 110–120V or 220–240V, 50/60Hz Dimensions Approx. 430 × 274.5 × 89.5mm Weight Approx. 5.647kg What's in the box, manuals and downloads FiiO S15 ×1 M.2 Drive-Cage Installation Screwdriver ×1 Spare Fuse ×1 AC Power Cord ×1 RM3 Bluetooth Remote Control ×1 USB 3.0 M.2 Drive-Cage Data Cable ×1 M.2 NVMe Drive Cage ×1 Warranty Card ×1 Quick Start Guide ×1 Drive-Cage Instruction Manual ×1 Remote-Control Diagram ×1 USB-A Dust Plug ×1 USB-C Dust Plug ×1 3.5mm Audio Cable ×1 Visit the EMiUZEK download center.

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True balanced Hi-Fi, within reach. The FiiO K7 has redefined the entry-level desktop audio market. By incorporating the same six-stage truly balanced audio circuit found in FiiO's high-end K9 Pro, the K7 delivers a level of clarity, power, and soundstage depth that was previously impossible at this price point. It is the perfect upgrade for gamers, music lovers, and budding audiophiles. At the heart of the K7 are two AKM AK4493S DAC chips, handling the left and right channels independently. This rich, musical chipset delivers FiiO’s signature "Velvet Sound"—smooth, detailed, and free of harshness, making it perfect for long listening sessions. Why it stands out Dual AK4493SEQ DACs Two AKM converters form a true left/right-channel balanced conversion stage. Dual THX AAA 788+ amplification A proven low-distortion amplifier delivers strong output for IEMs and full-size headphones. 2W balanced output The 4.4mm connection supplies up to 2000mW at 32Ω for many planar and dynamic headphones. USB, optical and coaxial inputs Connect a computer, television, CD transport or other compatible digital source. RCA analog input and line output Integrate an analog source or use the K7 as a DAC feeding an amplifier or active speakers. Precisely reconstructed volume curve ADC curve reconstruction provides 112 steps with improved channel balance at lower listening levels. Low- and high-gain modes Match sensitive earphones and harder-to-drive full-size headphones. Compact all-metal desktop chassis A 120 × 168mm footprint fits easily beside a monitor or compact audio system. Best for PC or Mac desktop headphone systems Balanced headphones needing more power Users who require both digital and analog inputs Not ideal for Users requiring network streaming Portable battery-powered listening Driving passive speakers directly EMiUZEK Buying Notes Choose FiiO K7 only when its inputs, outputs and operating modes match your existing equipment. Maximum decoding rates and output power depend on the selected connection, gain, load and power mode. Confirm required cables, regional power accessories and the selected product version before ordering. FAQDoes the standard FiiO K7 support Bluetooth?No. Choose the K7 BT if you need Bluetooth reception.Can the K7 connect to active speakers?Yes. Use the RCA line or preamplifier output. Passive speakers still require an external amplifier.What is the maximum balanced headphone output?The balanced output provides up to 2000mW at 32Ω under the specified conditions.Can I connect a TV to the K7?Yes, when the TV provides a compatible optical PCM output. Set the TV digital-audio format to PCM.HOW TO CONNECT Computer headphones Source icon: computerSource: PC / MacConnection: USBOutput connection: POTarget icon: headphonesOutput: 6.35mm or 4.4mm headphones Note: Select the correct input and output mode, then set volume safely before playback. TV listening Source icon: tvSource: TVConnection: Optical PCMOutput connection: OPTTarget icon: headphonesOutput: Headphones Note: Select the correct input and output mode, then set volume safely before playback. Active speakers Source icon: streamerSource: Digital or RCA sourceConnection: USB / S/PDIF / RCAOutput connection: RCA LOTarget icon: speakersOutput: RCA line out to speakers / amplifier Note: Select the correct input and output mode, then set volume safely before playback. Technical Specifications Feature Specification Product type Desktop DAC and headphone amplifier DAC / amplifier 2 × AK4493SEQ / dual THX AAA 788+ USB receiver XMOS XUF208 Digital inputs USB, optical and coaxial Analog input Stereo RCA Headphone outputs 6.35mm single-ended and 4.4mm balanced Line output Stereo RCA Balanced power ≥2000mW at 32Ω Single-ended power ≥1220mW at 32Ω Gain Low / high SNR ≥120dB A-weighted via USB Output impedance <1Ω at 32Ω Dimensions Approx. 120 × 168 × 55mm Weight Approx. 610g Color Black What's in the box, manuals and downloads K7, power cable, power adapter, USB cable, quick-start guide and warranty card. Visit the EMiUZEK download center. Official information: FiiO product page · FiiO specifications. Additional Product Content Connection summary Use case Source connection Output Computer headphones USB 6.35mm or 4.4mm headphones TV listening Optical PCM Headphones Active speakers USB / S/PDIF / RCA RCA line out to speakers / amplifier

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The FiiO M15S is a high-end Android digital audio player designed to work both as a powerful portable source and as the centre of a desktop headphone system. Its ES9038PRO DAC, five gain levels and three wired headphone outputs make it suitable for everything from sensitive IEMs to demanding full-size headphones. When connected to compatible QC/PD power, Desktop Mode bypasses the internal battery and unlocks Ultra High Gain. The included DK3S cooling dock supports longer desktop sessions, while Wi-Fi, two-way Bluetooth, AirPlay and Roon Ready provide flexible wireless playback. Why it stands out ES9038PRO desktop-class DAC architecture The eight-channel ESS DAC is configured in a fully differential design, supported by dual OPA926 amplifiers and precision NDK oscillators for strong resolution, separation and dynamic range. True battery-bypass Desktop Mode With compatible external QC/PD power, the M15S can run without charging or discharging the battery and unlock Ultra High Gain for up to 1200mW + 1200mW at 32Ω from the balanced outputs. Three headphone outputs and five gain levels Use 3.5mm single-ended, 2.5mm balanced or 4.4mm balanced headphones, then select an appropriate gain level for sensitive earphones or harder-to-drive full-size models. Six playback modes in one player Switch between Android, Pure Music, USB DAC, Bluetooth Receive, AirPlay and Roon Ready modes for local files, streaming services, computer audio and wireless playback. Best for Listeners who want one source for portable and desktop headphone listening Owners of both sensitive IEMs and demanding full-size headphones Users who still need a 2.5mm balanced output alongside 3.5mm and 4.4mm Roon, AirPlay and Android streaming users who also keep a large local music library Not ideal for Buyers who want a small, lightweight pocket player Users who need cellular data, GPS or phone functions Anyone who requires the newest Android version for long-term app compatibility Extremely difficult headphones that require a dedicated high-power desktop amplifier EMiUZEK Buying Notes The M15S runs Android 10. Check that any essential streaming app still supports this Android version before ordering. At approximately 345g, it is better treated as a transportable player than a lightweight pocket DAP. It can become warm during charging, high-gain playback or extended desktop use. Ultra High Gain and the maximum balanced output require compatible external QC/PD power. The included DK3S is a cooling stand; it does not replace the USB audio or power connection. The 3.5mm, 2.5mm and 4.4mm sockets share headphone/line-output functions, and 3.5mm also supports coaxial output. Confirm the selected output mode and lower the volume before connecting equipment. Frequently asked questions How does the M15S compare with the FiiO M23? The M15S uses an ES9038PRO DAC, includes a 2.5mm balanced output and offers up to 1200mW + 1200mW at 32Ω in Ultra High Gain. The M23 uses an AK4191EQ plus AK4499EX architecture, is lighter in its aluminium version and has a separate USB-C power input for more convenient desktop use. How does the M15S compare with the FiiO M17? The M15S is smaller and easier to carry, while the M17 is the stronger choice for exceptionally demanding headphones and a more permanently desktop-focused setup. Does Desktop Mode really bypass the battery? Yes. With compatible external fast power, Desktop Mode supplies the audio circuitry directly so the battery is neither charged nor discharged during use. Do I need a fast charger to use Ultra High Gain? Yes. Ultra High Gain is available only when the M15S detects compatible external QC/PD power. On battery power, use one of the other four gain levels. Is the DK3S an active USB dock? No. The included DK3S is a heat-dissipation stand. Connect the M15S and external power or USB audio with the appropriate cables. Is the M15S suitable for pocket use? It is portable, but its 345g weight and 18.9mm thickness make it better suited to a bag, desk or careful handheld use than a light trouser-pocket setup. Can I install streaming apps? Yes. Compatible Android applications can be installed, but the player uses Android 10, so verify current support for any essential app. Does it support Roon and AirPlay? Yes. The M15S includes Roon Ready and AirPlay modes, in addition to Android streaming and Pure Music playback. Does the M15S have cellular connectivity? No. Online services require Wi-Fi or a suitable network connection; it has no SIM or mobile-data service. Which headphone output should I use? Use 3.5mm for single-ended cables, or 2.5mm/4.4mm for compatible balanced cables. Balanced output provides the highest available power, but cable termination and headphone requirements should determine the connection. Can it drive sensitive IEMs? Yes. Start with Low Gain and a low volume setting. The five-level gain system makes it easier to match both sensitive IEMs and full-size headphones. Can it power every planar-magnetic headphone? No portable player is ideal for every load. The M15S drives many demanding headphones well, but exceptionally inefficient models may perform better with a dedicated desktop amplifier. Can I connect it to an amplifier or active speakers? Yes. Set the selected 3.5mm, 2.5mm or 4.4mm socket to line-output mode and connect it to a compatible amplifier or active speaker input. Do not connect headphones while fixed line output is selected. Does the 3.5mm socket support coaxial output? Yes. The 3.5mm port can provide headphone, line or coaxial digital output depending on the selected setting and cable. What is the maximum USB decoding rate? As a USB DAC, the M15S supports up to PCM 384kHz/32-bit and DSD256. Its USB Audio digital output supports up to PCM 768kHz/32-bit and DSD512 with compatible downstream equipment. What battery life should I expect? FiiO rates playback at approximately 10.5 hours through the single-ended output and 9 hours through balanced output. Actual runtime varies with volume, gain, screen, wireless use and file format. Can the internal battery be replaced by the user? No. The 6200mAh battery is internal and is not designed for user replacement. Desktop battery-bypass mode can help reduce unnecessary battery cycling. Can it transmit and receive Bluetooth audio? Yes. It supports two-way Bluetooth 5.0. Available codecs depend on whether the M15S is transmitting or receiving and on the connected device. How much storage can I add? The player has 64GB internal storage, with about 46GB available to the user, and supports a microSD card up to 2TB. HOW TO CONNECT Local music or streaming to wired headphones Source icon: Music playerSource: microSD / internal storage / Android streaming appConnection: Local playback / Wi-FiOutput connection: 3.5mm / 2.5mm / 4.4mm headphone outputTarget icon: HeadphonesOutput: IEMs or full-size headphones Note: Confirm Headphone Output mode, begin at low volume and choose gain according to headphone sensitivity. Computer audio in USB DAC mode Source icon: ComputerSource: Windows PC / MacConnection: USB-C data cableOutput connection: 3.5mm / 2.5mm / 4.4mm headphone outputTarget icon: HeadphonesOutput: Desktop headphone system Note: Windows may require the FiiO USB driver for full format support; select M15S as the computer's audio output. Desktop listening with battery bypass Source icon: Music playerSource: M15S local files / streaming / USB DACConnection: Compatible QC/PD external powerOutput connection: 3.5mm / 2.5mm / 4.4mm headphone outputTarget icon: HeadphonesOutput: High-power desktop headphone setup Note: Place the player on the included DK3S, enable Desktop Mode and verify that external fast power has been detected before selecting Ultra High Gain. Technical Specifications Feature Specification Product type High-resolution Android digital audio player Operating system Android 10 Processor Qualcomm Snapdragon 660 DAC / amplifier ES9038PRO / 2 × OPA926 Playback modes Android, Pure Music, USB DAC, Bluetooth Receive, AirPlay, Roon Ready Local and USB DAC decoding Up to PCM 384kHz/32-bit; DSD256 USB Audio digital output Up to PCM 768kHz/32-bit; DSD512 Headphone / line outputs 3.5mm single-ended; 2.5mm balanced; 4.4mm balanced Digital output 3.5mm shared coaxial output Maximum balanced power 1200mW + 1200mW at 32Ω; 368mW + 368mW at 300Ω in Ultra High Gain Maximum 3.5mm power 580mW + 580mW at 32Ω in Ultra High Gain Line-output level 2Vrms single-ended; 4Vrms balanced Gain Five levels; Ultra High Gain requires compatible external power Display 5.5-inch, 1440 × 720 Memory and storage 4GB RAM; 64GB internal storage; microSD up to 2TB Wireless 2.4/5GHz Wi-Fi; two-way Bluetooth 5.0 Bluetooth transmit codecs SBC, AAC, aptX, aptX HD, LDAC, LHDC Bluetooth receive codecs SBC, AAC, aptX, aptX HD, aptX LL, LDAC, aptX Adaptive Battery 6200mAh Rated battery life Approx. 10.5h single-ended / 9h balanced Charging time Approx. 3.5h Dimensions Approx. 140 × 80 × 18.9mm Weight Approx. 345g What's in the box, manuals and downloads FiiO M15S ×1 Leather Case ×1 DK3S Heat Dissipation Dock ×1 PD Charging/Data Cable ×1 USB Power Cable for DK3S ×1 USB Adapter ×1 Quick Start Guide ×1 Warranty Card ×1 Tip Card ×1 microSD Card Removal Pin ×1 GPL Manual ×1 Visit the EMiUZEK download center. Additional Product Content FiiO M15S vs M23: which should you choose? Feature FiiO M15S FiiO M23 DAC architecture ES9038PRO AK4191EQ + AK4499EX Desktop power connection Shared USB-C connection Separate USB-C POWER IN Maximum balanced power at 32Ω 1200mW + 1200mW 1000mW + 1000mW Wired headphone outputs 3.5mm, 2.5mm and 4.4mm 3.5mm and 4.4mm Weight Approx. 345g Approx. 299g for the aluminium version Best reason to choose 2.5mm support, higher maximum 32Ω balanced power and ES9038PRO design Lighter aluminium body, separate power input and AKM-based architecture

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The FiiO SR11 is a compact digital streaming transport that adds network playback to an existing DAC, integrated amplifier or active speaker system with a compatible digital input. It receives music over Ethernet, Wi-Fi, AirPlay, Roon, Bluetooth or local USB storage, then sends a digital signal through USB, optical or coaxial output. The SR11 does not contain an analog DAC stage, headphone amplifier or speaker amplifier. Its purpose is to preserve your existing audio system while adding convenient streaming control and high-resolution digital transport capability. Why it stands out Roon Ready and AirPlay in one compact transport Use dedicated Roon Ready or AirPlay modes, or select MIX mode so the SR11 can remain available to either ecosystem without repeatedly changing the operating mode. USB, optical and coaxial digital outputs Connect modern USB DACs through USB-A or USB-C, or use optical and coaxial S/PDIF with traditional DACs, amplifiers and active speakers. Gigabit Ethernet and dual-band Wi-Fi A 1000Mbps Ethernet port supports stable wired streaming, while 2.4GHz and 5GHz Wi-Fi provide flexible placement when a network cable is impractical. Useful front-panel control and included remote The LCD shows operating mode, output, network status, volume and sample-rate information, while the supplied infrared remote controls key functions from the listening position. Best for Adding Roon Ready or AirPlay streaming to an existing external DAC Hi-Fi systems that already provide optical, coaxial or USB digital input Listeners who prefer a dedicated network transport instead of using a computer Compact desktop or two-channel systems that benefit from Ethernet and Wi-Fi Not ideal for Users who need analog RCA or XLR outputs Anyone expecting to connect headphones or passive speakers directly Buyers who need Spotify Connect, TIDAL Connect or Chromecast as a guaranteed native endpoint AirPlay users expecting native high-resolution output above 44.1kHz/16-bit EMiUZEK Buying Notes The SR11 is a digital transport only. Your system must include a separate DAC or a component with a compatible USB, optical or coaxial digital input. Update the unit to current firmware before setup. Firmware V630 adds Bluetooth Receive, local USB playback, DLNA, FiiO Link and OTA functions; some features are unavailable on older firmware. USB and S/PDIF output cannot operate at the same time. In S/PDIF mode, optical and coaxial output operate simultaneously; the USB-A and USB-C audio outputs also cannot feed two DACs simultaneously. AirPlay converts incoming audio to 44.1kHz/16-bit. Choose Roon over USB when the connected DAC and source library require the SR11's highest supported resolution. Frequently asked questions Does the FiiO SR11 contain a DAC? No. The SR11 outputs digital audio only. Connect it to an external DAC, an amplifier with a digital input or active speakers with compatible digital decoding. Can I connect headphones directly? No. It has no headphone output or headphone amplifier. A separate DAC/headphone amplifier is required. Can it connect directly to passive speakers? No. Passive speakers require an amplifier. The SR11 should feed a DAC or an amplifier that accepts one of its digital outputs. Does it support Roon Ready? Yes. In Roon mode, the SR11 appears as a Roon Ready endpoint on the same network. Roon over USB supports up to PCM 768kHz/32-bit and DSD256 DoP when the connected DAC supports those formats. What is MIX mode? MIX mode keeps both Roon Ready and AirPlay reception available. They cannot play simultaneously; only one sending device can use the SR11 at a time. Does AirPlay provide high-resolution output? No. FiiO specifies that PCM, DSD and MQA sources received through AirPlay are converted to 44.1kHz/16-bit before output. Does the SR11 support AirPlay 2? FiiO documents the feature as AirPlay rather than guaranteeing AirPlay 2. Treat it as an AirPlay receiver and do not purchase it specifically for AirPlay 2 multiroom functionality. Does it support Spotify Connect, TIDAL Connect or Chromecast? These are not listed by FiiO as native SR11 endpoint modes. They may be accessible through another supported ecosystem or casting method, but should not be assumed to work as dedicated native Connect endpoints. Can it receive Bluetooth audio? Yes, after updating to V630 firmware or later. Bluetooth Receive supports SBC, AAC and LDAC, then sends the received audio to the selected digital output. Can it play music from a USB flash drive? Yes, with V630 firmware or later and the latest FiiO Control app. Both USB-A and USB-C data ports support storage, but two drives cannot be used at the same time. Which local file formats are supported? FiiO lists AAC, AIF, AIFF, APE, M4A, DSF, DFF, FLAC, MP3, WAV and WMA. OGG and CUE splitting are not supported for local playback. Can USB and coaxial output play at the same time? No. Select either USB output or S/PDIF output. When S/PDIF is selected, optical and coaxial outputs operate simultaneously. Can USB-A and USB-C feed two DACs simultaneously? No. Both ports can connect to an external USB DAC, but only one USB audio output is active; by default, the first connected compatible device is used. Which output provides the highest resolution? USB supports the highest specified Roon rate, up to PCM 768kHz/32-bit and DSD256 DoP. Optical and coaxial support up to PCM 192kHz/24-bit and DSD64. Should I use Ethernet or Wi-Fi? Both are supported. Gigabit Ethernet is preferable when maximum network stability is important; dual-band Wi-Fi is convenient when cabling is difficult. Does it have a battery? No. The SR11 requires continuous 5V/2A power through its dedicated USB-C power input. Can I use a different power supply? Use a stable 5V/2A USB power supply that meets FiiO's requirement. Higher-voltage fast-charging output is unnecessary because the SR11 is specified for 5V input. Why is there no sound after connection? Confirm that the source and SR11 are on the same network, select the correct receiving mode, then match the SR11 output setting to the connected DAC. USB and S/PDIF modes are selected separately. How is firmware updated? Firmware can be installed from a USB flash drive through the USB-A or USB-C data port. Later firmware also supports OTA updating where available. HOW TO CONNECT Roon to an external USB DAC Source icon: Roon serverSource: Roon Core / local library / supported Roon streaming serviceConnection: Gigabit Ethernet / 2.4GHz or 5GHz Wi-FiOutput connection: USB-A or USB-C digital outputTarget icon: DACOutput: External USB DAC, DAC/headphone amplifier or compatible integrated amplifier Note: Select Roon or MIX mode and USB output. The maximum usable format is limited by both the SR11 and the connected DAC. Apple device to an optical or coaxial DAC Source icon: Apple deviceSource: iPhone / iPad / MacConnection: AirPlay over the same networkOutput connection: Optical or coaxial S/PDIFTarget icon: DACOutput: External DAC, amplifier or active speakers with digital input Note: Select AirPlay or MIX mode and S/PDIF output. AirPlay audio is converted to 44.1kHz/16-bit. Bluetooth source to an existing Hi-Fi system Source icon: PhoneSource: Smartphone / tablet / Bluetooth transmitterConnection: Bluetooth ReceiveOutput connection: USB, optical or coaxial digital outputTarget icon: Audio systemOutput: External DAC or amplifier with digital input Note: Update to V630 firmware or later, select Bluetooth mode and match the SR11 output setting to the connected component. USB storage to a DAC Source icon: USB storageSource: USB flash drive with supported music filesConnection: USB-A or USB-C data portOutput connection: Remaining compatible USB output or optical/coaxial S/PDIFTarget icon: DACOutput: External DAC or digital-input audio system Note: Local playback requires current firmware and the latest FiiO Control app. Only one USB storage device can be used at a time, and port availability depends on the chosen storage and output connection. Technical Specifications Feature Specification Product type Network digital audio transport Processor / Wi-Fi module Ingenic X2000 / AP6256 Core network modes MIX, Roon Ready, AirPlay Additional functions Bluetooth Receive, local USB playback, DLNA, FiiO Link and OTA with V630 firmware or later Roon maximum via USB PCM 768kHz/32-bit; DSD256 DoP, subject to connected DAC Optical / coaxial maximum PCM 192kHz/24-bit; DSD64 AirPlay receiving output Converted to 44.1kHz/16-bit Digital outputs USB-A, USB-C, optical and coaxial Network 1000Mbps Ethernet; 2.4GHz/5GHz Wi-Fi 802.11 b/g/n/ac Bluetooth Receive codecs SBC, AAC, LDAC with supported firmware Display LCD with mode, network, volume and output information Control Front encoder knob and included infrared remote Firmware update USB flash drive through USB-A or USB-C; OTA with supported firmware Power requirement DC 5V/2A through dedicated USB-C power input Battery None Dimensions Approx. 157 × 133 × 32.3mm including feet Weight Approx. 375g Colors Black / Silver What's in the box, manuals and downloads FiiO SR11 ×1 5V/2A Power Adapter ×1 Infrared Remote Control ×1 USB Cable ×1 Quick Start Guide ×1 Warranty Card ×1 Visit the EMiUZEK download center.

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The FiiO K19 is a flagship desktop DAC, headphone amplifier and preamplifier built for demanding headphones, active speakers and full-size stereo systems. Dual ES9039SPRO DACs, an eight-channel THX AAA 788+ amplifier and a fully balanced signal path provide substantial output power with flexible source and output control. USB, optical, coaxial, HDMI, HDMI ARC and Bluetooth inputs allow the K19 to serve computers, televisions, streamers and mobile devices. Its slim chassis can sit flat or vertically on the supplied stand, while 31-band PEQ provides unusually detailed system and headphone tuning. Why it stands out Dual ES9039SPRO flagship DAC architecture Two eight-channel ESS DACs operate in a fully balanced design, supported by dual ACCUSILICON femtosecond oscillators and dedicated FPGA clock management. Eight-channel THX AAA 788+ headphone amplifier The balanced 4.4mm and XLR4 outputs deliver up to 8000mW + 8000mW at 32Ω in Ultra High Gain for demanding dynamic and planar-magnetic headphones. HDMI input, HDMI pass-through and HDMI ARC Use the K19 with a computer, game source, monitor or compatible television, in addition to conventional USB, optical, coaxial and Bluetooth audio sources. 31-band lossless PEQ and flexible system control Fine-tune headphones or speakers with adjustable PEQ, custom presets and DSP tools through compatible desktop software, web control or the FiiO Control app. Best for Flagship desktop headphone systems requiring high balanced output power Users who want one DAC for a computer, television and multiple digital sources Balanced stereo systems using XLR preamplifier or fixed line output Listeners who need detailed PEQ correction for headphones or room integration Not ideal for Portable or battery-powered listening Driving passive speakers without a separate power amplifier Very small desks where a 250 × 225mm component is impractical Users who need analog audio input, network streaming or phono input built into the DAC EMiUZEK Buying Notes The K19 is powerful enough to damage sensitive earphones or hearing at unsafe settings. Begin with Low Gain and low volume, then increase only as required. Choose the correct rear power selector for the connected supply: AC for the regional mains cable or DC for a compatible 10–16V supply; FiiO recommends 15V/3A or higher. Never connect an external DC supply outside the specified range. LO is fixed-level rear output and cannot be volume-controlled. Lower the downstream amplifier or active-speaker volume before selecting LO; use PRE when the K19 should control volume. HDMI ARC supports 44.1/48kHz PCM and depends on the television's ARC settings. It is not eARC multichannel decoding; set the TV to a compatible PCM output. Frequently asked questions What is the maximum balanced headphone output? In Ultra High Gain, the 4.4mm and XLR4 outputs provide at least 8000mW + 8000mW at 32Ω and 1100mW + 1100mW at 300Ω under FiiO's stated test conditions. Can I use sensitive IEMs with the K19? Yes, but its very high power requires care. Select Low Gain, set a low maximum-volume limit and start playback at minimum volume. Can it power passive speakers directly? No. RCA or XLR output must feed an external power amplifier, integrated amplifier or active speakers. What is the difference between PO, PRE, LO and PO+PRE? PO sends adjustable audio to the front headphone outputs. PRE sends adjustable audio to the rear RCA/XLR outputs. LO sends fixed-level audio to the rear outputs. PO+PRE activates both front and rear adjustable outputs. Can the three front headphone outputs work simultaneously? They share the same priority and can output together, but FiiO does not recommend prolonged simultaneous use, especially with headphones of very different impedance. Does HDMI ARC work with every television? The TV must support ARC and be configured for HDMI ARC audio, normally PCM. HDMI compatibility varies by source and display, so confirm the TV's ARC settings if no audio is received. What is the difference between HDMI IN and HDMI ARC? HDMI IN receives audio and video from a source and passes video to a monitor through HDMI OUT. HDMI ARC receives compatible audio back from a television through the HDMI OUT (ARC) port. Does the K19 support multichannel Dolby or DTS decoding? It is a two-channel audio DAC and is not documented as a Dolby/DTS surround decoder. Configure the HDMI source or TV to output compatible stereo PCM. Can I control TV volume with HDMI CEC? FiiO does not specify full HDMI-CEC power and volume integration. Use the K19 knob, supplied remote or FiiO Control, and do not assume the TV remote will control every function. What does the 31-band PEQ support? It can adjust PCM signals from 44.1kHz to 192kHz without sample-rate conversion, with per-band gain and Q controls plus importable and exportable presets. Can I use PEQ with every format and input? PEQ availability depends on input, format, sample rate and firmware. Native DSD and signals outside the supported PCM range may not use the same processing path. Does the K19 have analog inputs? No. Its inputs are USB, coaxial, optical, HDMI, HDMI ARC and Bluetooth. RCA and XLR connectors on the rear panel are outputs. Which Bluetooth codecs are supported? Bluetooth 5.1 reception supports SBC, AAC, aptX, aptX LL, aptX HD, aptX Adaptive and LDAC when the source device supports the same codec. What is the maximum USB decoding rate? USB supports up to PCM 768kHz/32-bit and native DSD512 with compatible software, drivers and source material. Does Windows require a driver? Use the current FiiO USB driver on Windows 10 or 11 for full UAC2.0 capability. FiiO states that the K19 driver is not compatible with Windows 7 or 8. Can it work with a PS5 or Nintendo Switch? The K19 supports UAC1.0 driverless mode for compatible consoles. Select UAC1.0 when the source does not support its higher-rate UAC2.0 mode. Can I connect a phone by USB? Yes, with a compatible OTG cable and externally powered K19. Mobile USB audio behavior varies by phone and app, so universal compatibility is not guaranteed. Can I use an external linear power supply? Yes. Use a regulated 10–16V DC supply with a 5.5 × 2.1mm centre-positive plug; FiiO recommends 15V/3A or higher. Set the rear selector to DC before use. Why is there no sound from the rear outputs? Select PRE, LO or PO+PRE. If PO is selected, only the front headphone outputs are active. Also confirm the correct input and AC/DC power selector. Can the K19 stand vertically? Yes. Use the supplied support stand for vertical placement. For horizontal placement, apply the supplied foot pads and leave the ventilation areas unobstructed. HOW TO CONNECT Computer to balanced headphones Source icon: ComputerSource: Windows PC / MacConnection: USB data cableOutput connection: 4.4mm or XLR4 balanced headphone outputTarget icon: HeadphonesOutput: High-performance desktop headphone system Note: Select USB input and PO output. Install the current FiiO driver on Windows and begin with a safe gain and volume setting. TV audio through HDMI ARC Source icon: TVSource: Television with HDMI ARCConnection: HDMI OUT (ARC) portOutput connection: Headphones or PRE outputTarget icon: Headphones or stereo systemOutput: Personal TV listening, amplifier or active speakers Note: Enable ARC and compatible stereo PCM output on the TV, then select HDMI ARC input on the K19. HDMI source with monitor pass-through Source icon: Computer or media sourceSource: PC / game source / media playerConnection: Source to HDMI IN; HDMI OUT to monitorOutput connection: Headphones, RCA or XLRTarget icon: Monitor and audio systemOutput: Video pass-through with K19 audio decoding Note: Select HDMI input and choose PO, PRE or LO according to the connected audio equipment. Stereo preamplifier setup Source icon: Digital sourceSource: USB / optical / coaxial / HDMI / BluetoothConnection: Selected digital inputOutput connection: RCA or balanced XLR in PRE modeTarget icon: Amplifier or active speakersOutput: Volume-controlled stereo system Note: Use PRE for K19 volume control. Use LO only when the downstream component controls volume, and reduce its level before switching. Technical Specifications Feature Specification Product type Flagship desktop DAC, headphone amplifier and preamplifier DAC 2 × ESS ES9039SPRO USB controller XMOS XU316 Bluetooth chipset Qualcomm QCC5125, Bluetooth 5.1 Headphone amplifier Eight-channel THX AAA 788+ Inputs USB, optical, coaxial, HDMI, HDMI ARC, Bluetooth Headphone outputs 6.35mm single-ended, 4.4mm balanced, XLR4 balanced Analog outputs RCA single-ended and XLR balanced Digital outputs Optical, coaxial and HDMI USB decoding Up to PCM 768kHz/32-bit; native DSD512; MQA Coaxial input Up to PCM 192kHz/24-bit; DSD64 Optical input Up to PCM 96kHz/24-bit HDMI input/output Up to PCM 192kHz/24-bit HDMI ARC PCM 44.1/48kHz Balanced output power Up to 8000mW + 8000mW at 32Ω in Ultra High Gain 6.35mm output power Up to 2300mW + 2300mW at 32Ω in Ultra High Gain Gain Low, Medium, High, Super High, Ultra High Line-output level RCA 2.5Vrms; XLR 4.8Vrms Display 1.30-inch 240 × 240 TFT Power AC 100–240V, 50/60Hz or external DC 10–16V; 15V/3A or higher recommended Dimensions Approx. 250 × 225 × 36.7mm Weight Approx. 1.8kg Colors Black / Silver What's in the box, manuals and downloads FiiO K19 ×1 Regional AC Power Cord ×1 USB Data Cable ×2 Infrared Remote Control ×1 Vertical Support Stand ×1 3.5mm Trigger Cable ×1 Foot Pad Set ×1 Quick Start Guide ×1 Warranty Card ×1 Visit the EMiUZEK download center.

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The FiiO TT13 is a fully automatic belt-drive turntable designed for straightforward vinyl playback. Press Start and the tonearm lifts, moves into position and begins playing; at the end, it can stop and return automatically. Repeat playback and remote control make it especially convenient for everyday listening. A built-in phono preamplifier provides fixed RCA line output for direct connection to active speakers or a line-level amplifier input. The Bluetooth version can also transmit vinyl audio wirelessly to compatible headphones or speakers, while the Standard version is intended for wired RCA listening. Why it stands out Fully automatic playback with repeat Automatic start, stop, tonearm return and loop playback reduce handling and make vinyl easier to use without manually cueing every side. Built-in analog phono preamplifier Dual JRC5532 op-amps provide an RCA line-level output up to 800mV, allowing direct connection to active speakers or a standard line input. Audio-Technica AT3600LA cartridge The fitted moving-magnet cartridge is widely supported, with a replaceable stylus and factory-optimized tracking force for the automatic tonearm. Optional aptX HD Bluetooth transmission The Bluetooth version uses a Qualcomm QCC3040 platform and supports SBC, aptX, aptX Low Latency and aptX HD transmission. Best for First-time vinyl listeners who want automatic, low-effort operation Direct connection to active speakers or an amplifier's AUX/LINE input Users who value remote start, stop, repeat and tonearm control Wireless listening through compatible Bluetooth headphones or speakers when choosing the Bluetooth version Not ideal for Users who want adjustable tracking force, anti-skate or broad cartridge experimentation Systems that require a raw PHONO-level output for an external phono stage Anyone who wants to digitize records through USB Buyers expecting Bluetooth transmission from the Standard version EMiUZEK Buying Notes Choose the variant carefully: only the Bluetooth version can transmit audio wirelessly. Color and regional power-plug options are separate variant selections. The TT13 provides fixed RCA LINE output only, not switchable PHONO output. Connect it to AUX, LINE, CD or another line-level input—not to a phono input. The automatic mechanism is calibrated for the supplied Audio-Technica AT3600LA cartridge at 3.5 ± 0.5g. FiiO recommends replacing it only with the same cartridge model. Place the turntable on a level, stable surface away from speakers and vibration. Confirm the correct 7/12-inch size and 33⅓/45 RPM settings before playback. Frequently asked questions Do all FiiO TT13 versions include Bluetooth? No. Bluetooth transmission is available only on variants labelled Bluetooth. The Standard version uses wired RCA output only. Is Bluetooth an input or an output? It is an output. The Bluetooth version transmits record playback to compatible headphones, speakers or receivers; it does not receive music from a phone. Which Bluetooth codecs are supported? The Bluetooth 5.2 version supports SBC, aptX, aptX Low Latency and aptX HD. The receiving device must support the same codec, otherwise the connection falls back to a mutually supported format. Does Bluetooth preserve a completely analog signal path? No. RCA playback follows the analog signal path, while Bluetooth transmission requires analog-to-digital conversion and wireless encoding. Do I need a separate phono preamp? No. The built-in phono stage outputs line level. Connect RCA directly to active speakers or a LINE/AUX input. Can I connect the TT13 to a PHONO input? It is not recommended because the TT13 does not provide raw phono-level output. Feeding its line-level signal into another phono stage can cause excessive gain and incorrect equalization. Can it drive passive speakers directly? No. Passive speakers require an integrated amplifier or power amplifier. The TT13 can connect directly only to active speakers or line-level equipment. Can I connect wired headphones directly? No. There is no headphone output. Use a headphone amplifier with RCA input, or choose the Bluetooth version for compatible wireless headphones. Is the TT13 fully automatic? Yes. It supports automatic start, stop, tonearm movement and return, plus repeat playback. Manual cueing is also possible when needed. Which record sizes and speeds are supported? It supports 7-inch and 12-inch records at 33⅓ or 45 RPM. A large-hole 45 RPM adapter is included. Can it play 10-inch records? The automatic size selector is specified for 7-inch and 12-inch records. A 10-inch record may require careful manual cueing and is not part of the stated automatic-size support. Can I install a different cartridge? FiiO recommends only the same AT3600LA model because the automatic tonearm and tracking force are factory-calibrated for it. Other cartridges are not supported. Can I replace only the stylus? Yes. The stylus is a consumable part and can be replaced with a compatible stylus for the AT3600LA cartridge. Stylus wear is not covered by the product warranty. Can tracking force and anti-skate be adjusted? No user adjustment is provided. Tracking force is factory-set to approximately 3.5 ± 0.5g for the supplied cartridge. Can the TT13 convert records to digital files? No. It does not include USB recording or vinyl-ripping functionality. Why does the platter appear to wobble slightly? First confirm that the cast-aluminum platter is seated correctly and rotates freely. If movement is excessive or audible, stop playback and reseat the platter rather than forcing the mechanism. What does the rear balance control do? It compensates for small left/right level differences in the analog output. Leave it centred unless one channel is consistently louder after checking the cables and speakers. Can I use an external DC power supply? Yes. Use a suitable 12V/1A or higher supply and turn off the AC power switch when using DC. If AC and DC are connected together, AC takes priority. Does the dust cover need to be removed during playback? No. It can be used open or closed and is removable. If acoustic feedback occurs at high speaker volume, try closing it, removing it or moving the turntable farther from the speakers. HOW TO CONNECT Active speakers Source icon: Vinyl recordSource: 7-inch or 12-inch recordConnection: AT3600LA cartridge and built-in phono preamplifierOutput connection: Stereo RCA line outputTarget icon: Active speakersOutput: RCA input on powered speakers Note: Use a LINE/AUX input, start with low speaker volume and connect the supplied ground wire if the speaker system provides a grounding terminal. Integrated amplifier or receiver Source icon: Vinyl recordSource: TT13 analog playbackConnection: Built-in phono preamplifierOutput connection: Stereo RCA line outputTarget icon: AmplifierOutput: AUX / LINE / CD input Note: Do not use the amplifier's PHONO input because the TT13 already outputs an equalized line-level signal. Wired headphone system Source icon: Vinyl recordSource: TT13Connection: RCA line outputOutput connection: RCA cableTarget icon: Headphone amplifierOutput: Wired headphones through a separate headphone amplifier Note: The TT13 has no headphone socket or volume control; adjust listening level on the connected headphone amplifier. Bluetooth headphones or speakers Source icon: Vinyl recordSource: TT13 Bluetooth versionConnection: Bluetooth 5.2 transmissionOutput connection: SBC / aptX / aptX LL / aptX HDTarget icon: Wireless headphones or speakerOutput: Wireless vinyl playback Note: Hold Pairing for three seconds, place the receiving device in pairing mode and keep nearby devices from entering pairing mode accidentally. Technical Specifications Feature Specification Product type Fully automatic belt-drive turntable with built-in phono preamplifier Cartridge Audio-Technica AT3600LA moving magnet Tracking force 3.5 ± 0.5g Analog stage 2 × JRC5532 op-amps Drive mechanism Custom automatic mechanism; internal gear drive and platter belt drive Speeds 33⅓ and 45 RPM Record sizes 7-inch and 12-inch automatic selection Wow and flutter ≤0.15% WRMS at 33⅓ RPM, 3kHz Analog output Fixed stereo RCA line output only Line-output level ≥800mV + 800mV at 1kHz/0dB test record Bluetooth version 5.2 on Bluetooth variant; Qualcomm QCC3040 Bluetooth transmit codecs SBC, aptX, aptX LL, aptX HD Remote control Included infrared remote Lighting Seven colors plus Off; adjustable brightness Power AC 100–240V, 50/60Hz or DC 12V/1A or higher Dimensions Approx. 450 × 350 × 114mm Weight Approx. 3.85kg Colors Black / White / Silver What's in the box, manuals and downloads FiiO TT13 with Cast-Aluminum Platter ×1 Platter Mat ×1 Regional Power Cord ×1 RCA Audio Cable with Ground Wire ×1 Infrared Remote Control ×1 Quick Start Guide ×1 Warranty Card ×1 Large-Hole 45 RPM Record Adapter ×1 Visit the EMiUZEK download center. Additional Product Content Standard or Bluetooth version? Feature Standard Bluetooth RCA line output Yes Yes Bluetooth transmission No Yes Supported wireless codecs Not applicable SBC, aptX, aptX LL, aptX HD Best for Wired active speakers or amplifier systems Wired systems plus optional wireless headphones or speakers

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The FiiO K7 BT is a fully balanced desktop DAC and headphone amplifier for wired and wireless sources. Dual AK4493SEQ DACs and dual THX AAA 788+ amplifier modules provide up to 2000mW + 2000mW at 32Ω through the 4.4mm output, with a 6.35mm output for standard headphone cables. Bluetooth 5.1 reception adds LDAC and aptX-family playback from phones and tablets, while USB, optical, coaxial and RCA inputs cover computers, televisions, disc transports and analog sources. Rear RCA output allows the K7 BT to serve active speakers or an external amplifier in fixed or variable mode. Why it stands out Dual AK4493SEQ balanced DAC architecture Separate AKM converters for the left and right channels support a fully balanced signal path with a smooth, detailed presentation. Dual THX AAA 788+ headphone amplification The 4.4mm balanced output delivers up to 2000mW + 2000mW at 32Ω, while the 6.35mm output reaches 1220mW + 1220mW. LDAC and aptX Adaptive Bluetooth reception The Qualcomm QCC5124 platform supports LDAC, aptX Adaptive, aptX HD, aptX LL, aptX, AAC and SBC from compatible transmitting devices. Five inputs and three practical output modes Switch among Bluetooth, USB, optical, coaxial and RCA input, then choose PO for headphones, PRE for variable RCA output or LO for fixed RCA output. Best for Desktop headphone systems using both wired and Bluetooth sources Balanced headphones with 4.4mm termination Computers, televisions and disc transports requiring one shared DAC Active speakers or amplifiers that need fixed or volume-controlled RCA output Not ideal for Users who need Bluetooth transmission to wireless headphones Balanced speaker systems requiring XLR line output Portable or battery-powered listening Driving passive speakers without a separate speaker amplifier EMiUZEK Buying Notes Bluetooth on the K7 BT is receive-only. It accepts audio from a phone, tablet or computer but cannot send audio to Bluetooth headphones or speakers. The 4.4mm socket is a balanced headphone output, not a balanced line output. Use the rear RCA connectors for an amplifier or active speakers. LO is fixed at line level and ignores the volume knob. Reduce the downstream system's volume before selecting LO; choose PRE when the K7 BT should control speaker volume. The K7 BT requires its 12V/2A external power adapter even when receiving audio by USB or Bluetooth. Confirm the correct regional power cable before use. Frequently asked questions What is the difference between the FiiO K7 BT and standard K7? The audio architecture, wired inputs and outputs are otherwise substantially the same, but K7 BT adds Bluetooth 5.1 reception, a rear antenna and Bluetooth-related settings through FiiO Control. Can the K7 BT transmit audio to Bluetooth headphones? No. It is a Bluetooth receiver. Connect wired headphones to the 6.35mm or 4.4mm output. Which Bluetooth codecs are supported? It supports SBC, AAC, aptX, aptX LL, aptX HD, aptX Adaptive and LDAC. The source device must support and select the same codec. How do I know which Bluetooth codec is active? The K7 BT indicator and FiiO Control app do not display the active codec. Check the Bluetooth audio information on the transmitting phone, tablet or computer. Can it connect to two Bluetooth sources? Yes. Two devices can remain connected, but you must pause playback on one before starting the other; the K7 BT does not provide a hardware source-toggle between them. What can FiiO Control adjust? The app manages Bluetooth-related settings, codec selection, PEQ and Bluetooth firmware while the unit is in BT mode. It does not control every hardware input, RGB, sampling-rate or output function. Can I use sensitive IEMs? Yes. Select Low Gain, begin at minimum volume and increase gradually. The K7 BT is powerful, so high gain is unnecessary for most sensitive earphones. What is the maximum balanced output? FiiO specifies at least 2000mW + 2000mW at 32Ω and 560mW + 560mW at 300Ω from the 4.4mm balanced output under its stated test conditions. What is the maximum 6.35mm output? The single-ended output provides at least 1220mW + 1220mW at 32Ω and 140mW + 140mW at 300Ω under FiiO's stated conditions. What do Low and High Gain change? Low Gain is 0dB and High Gain is 6dB. Use Low Gain unless the headphone needs more volume range; gain has no effect in fixed LO mode. Why is there no sound before the volume knob reaches about 9 o'clock? The power switch and volume control share the same knob, with a designed low-level dead zone between Off and the usable volume range. This is normal behavior. Can I connect active speakers? Yes. Use the rear RCA output in PRE mode for variable volume or LO mode when the speaker or amplifier controls volume. Can it drive passive speakers? No. The RCA output is line level and requires an external speaker amplifier or powered speakers. Can I use the 4.4mm output as a balanced line output? No. It is a powered headphone output. Connecting it to a balanced amplifier input is not recommended; the K7 BT provides RCA line output only. Does it have an analog input? Yes. The rear RCA LINE IN bypasses digital conversion and allows the K7 BT to operate as a headphone amplifier for an analog source. What is the difference between PO, PRE and LO? PO activates the front headphone outputs with volume control. PRE activates variable rear RCA output. LO activates fixed-level rear RCA output. What is the maximum USB decoding rate? USB supports up to PCM 384kHz/32-bit and DSD256. Coaxial supports up to PCM 192kHz/24-bit, while optical supports up to PCM 96kHz/24-bit. Does coaxial input support DSD? FiiO's standard K7 BT specification lists PCM for coaxial input. Do not assume native DSD support over S/PDIF; use USB for documented DSD256 playback. Does Windows require a driver? Install the current FiiO USB DAC driver for full operation on Windows. Mac is driver-free; Linux compatibility depends on the distribution and USB audio implementation. Can I connect a phone by USB? Yes, with a compatible directional OTG cable to the USB-B input. Mobile USB audio support varies by device and app, and the required OTG cable is normally purchased separately. Is it normal for the case to become warm? Yes. The THX amplifier and internal circuitry generate heat during operation. Keep the ventilation area clear; protection circuits are provided for abnormal overheating, overload and DC output. HOW TO CONNECT Phone or tablet over Bluetooth Source icon: PhoneSource: Smartphone / tabletConnection: Bluetooth 5.1Output connection: 6.35mm or 4.4mm headphone outputTarget icon: HeadphonesOutput: Wired headphones or IEMs Note: Select BT input and PO output. Bluetooth receives audio from the phone; it does not transmit to wireless headphones. Computer to balanced headphones Source icon: ComputerSource: Windows PC / MacConnection: USB-B data inputOutput connection: 4.4mm balanced headphone outputTarget icon: HeadphonesOutput: Balanced desktop headphone system Note: Select USB and PO, install the FiiO driver on Windows, then start in Low Gain at a safe volume. Television or digital transport Source icon: TV or disc transportSource: Optical or coaxial digital audioConnection: TOSLINK optical / RCA coaxialOutput connection: 6.35mm or 4.4mm headphone outputTarget icon: HeadphonesOutput: Personal TV or disc listening Note: Set the source to compatible stereo PCM if necessary and match the K7 BT input to OPT or COAX. Active speakers or stereo amplifier Source icon: Digital or Bluetooth sourceSource: USB / optical / coaxial / BluetoothConnection: Selected K7 BT inputOutput connection: Rear RCA PRE or LOTarget icon: Active speakers or amplifierOutput: Stereo line-level system Note: Use PRE for K7 BT volume control. Use LO only when the downstream component controls volume. Technical Specifications Feature Specification Product type Bluetooth desktop DAC and balanced headphone amplifier DAC 2 × AK4493SEQ USB controller XMOS XUF208 Headphone amplifier 2 × THX AAA 788+ Bluetooth QCC5124; Bluetooth 5.1 receive-only Bluetooth codecs SBC, AAC, aptX, aptX LL, aptX HD, aptX Adaptive, LDAC Inputs Bluetooth, USB-B, optical, coaxial, stereo RCA line input Headphone outputs 6.35mm single-ended; 4.4mm balanced Line output Stereo RCA, fixed LO or variable PRE USB decoding Up to PCM 384kHz/32-bit; DSD256 Coaxial decoding Up to PCM 192kHz/24-bit Optical decoding Up to PCM 96kHz/24-bit Balanced power ≥2000mW + 2000mW at 32Ω; ≥560mW + 560mW at 300Ω Single-ended power ≥1220mW + 1220mW at 32Ω; ≥140mW + 140mW at 300Ω Recommended headphone impedance 16–300Ω Gain Low 0dB / High 6dB Line-output level ≥2Vrms Power DC 12V/2A Dimensions Approx. 120 × 168 × 55mm Weight Approx. 610g Color Black What's in the box, manuals and downloads FiiO K7 BT ×1 12V/2A Power Adapter ×1 Regional Power Cable ×1 USB Data Cable ×1 Bluetooth Antenna ×1 Quick Start Guide ×1 Warranty Card ×1 Visit the EMiUZEK download center. Additional Product Content FiiO K7 BT vs K7 Feature K7 BT K7 Bluetooth reception Yes, Bluetooth 5.1 No High-resolution wireless codecs LDAC and aptX Adaptive supported Not applicable FiiO Control Bluetooth settings and PEQ Not supported Wired DAC and amplifier architecture Dual AK4493SEQ and dual THX AAA 788+ Dual AK4493SEQ and dual THX AAA 788+ Best reason to choose Wireless source convenience Lower-cost wired-only system

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FiiO BTR17 is a flagship portable Bluetooth DAC and headphone amplifier designed for listeners who want high-quality wireless playback, powerful balanced output, and desktop-class USB DAC performance in one compact device. It combines the Qualcomm QCC5181 Bluetooth platform, dual ESS ES9069Q DACs, XMOS XU316 USB processing, and a four-channel fully balanced THX AAA 78+ amplifier architecture. Why it stands out Flagship Bluetooth 5.4 Platform The Qualcomm QCC5181 platform supports aptX Lossless, LDAC, aptX Adaptive, aptX HD, aptX, AAC, and SBC. Actual codec availability depends on the source device. Dual ESS ES9069Q DACs Two ES9069Q DAC chips use ESS fourth-generation 32-bit HyperStream architecture to deliver detailed sound, low distortion, and a clean background through both wired and wireless playback. THX AAA 78+ Balanced Amplification The four-channel fully balanced amplifier design provides controlled, low-distortion output through the 3.5mm single-ended and 4.4mm balanced headphone connections. Desktop Mode with up to 650mW + 650mW Connect a suitable 5V/2A external power supply to the dedicated POWER IN port and enable Desktop Mode to unlock up to 650mW + 650mW through the 4.4mm balanced output at 32Ω. Best for Listeners who want high-quality Bluetooth playback with wired headphone output Users of 4.4mm balanced headphones and demanding portable headphones Desktop users who want a compact USB DAC and headphone amplifier Android users with compatible LDAC, aptX Adaptive, or aptX Lossless devices Listeners who want customizable PEQ through the FiiO Control app Not ideal for Users looking for a standalone music player with internal storage Wireless headphones, which cannot be driven from its headphone outputs Buyers expecting aptX Lossless from every phone or computer Users who need maximum Desktop Mode power without an external USB power source EMiUZEK Buying Notes aptX Lossless requires a compatible source device; unsupported devices will use another available Bluetooth codec. The maximum 650mW + 650mW balanced output requires Desktop Mode, external 5V/2A power, high gain, and a 32Ω load. The 4.4mm balanced and 3.5mm single-ended outputs provide different power levels; confirm your headphone plug before ordering. BTR17 is a Bluetooth receiver and USB DAC/headphone amplifier, not a standalone player and not a Bluetooth transmitter. FAQ Can FiiO BTR17 be used without Bluetooth? Yes. Connect it to a compatible phone, tablet, or computer through USB and use it as a wired USB DAC and headphone amplifier. Does BTR17 support aptX Lossless? Yes, but the source device must also support aptX Lossless. Otherwise, BTR17 will use another mutually supported codec such as LDAC, aptX Adaptive, aptX HD, AAC, or SBC. What is the difference between normal and Desktop Mode? Normal operation prioritizes portability and battery use. Desktop Mode uses external power through the dedicated POWER IN port and provides substantially higher headphone output power. Can Desktop Mode avoid draining the phone battery? Yes. Use the data USB-C port for the phone or computer and connect external power to the separate orange POWER IN port. Can BTR17 drive full-size headphones? It can drive many portable and full-size headphones, especially through the 4.4mm balanced output in Desktop Mode. Required power still depends on headphone impedance and sensitivity. Does it support calls? Yes. BTR17 supports Bluetooth voice calls through its built-in omnidirectional microphone and compatible CTIA in-line microphones. HOW TO CONNECT Bluetooth Headphone Setup Source icon: Smartphone Source: Android / iPhone / Tablet Connection: Bluetooth Output connection: 3.5mm / 4.4mm Balanced Target icon: Headphones Output: Wired Headphones / Earphones Note: The selected Bluetooth codec depends on the source device. USB DAC with Smartphone Source icon: Smartphone Source: USB-C Smartphone / Tablet Connection: USB-C Data Cable Output connection: 3.5mm / 4.4mm Balanced Target icon: Headphones Output: Wired Headphones / Earphones Note: Select PHONE mode to reduce power draw from the connected mobile device. Desktop USB DAC Setup Source icon: Computer Source: Windows / macOS Computer Connection: USB-C Data Output connection: 3.5mm / 4.4mm Balanced Target icon: Headphones Output: Desktop Headphone System Note: Connect a 5V/2A power supply to POWER IN and enable Desktop Mode for maximum output. Car Audio Setup Source icon: Smartphone Source: Smartphone Connection: Bluetooth Output connection: 3.5mm Line Connection Target icon: Car Audio Output: Vehicle Audio System Note: In-vehicle mode supports automatic power-on and power-off with the vehicle USB supply. Technical Specifications Feature Specification Bluetooth platform Qualcomm QCC5181 Bluetooth version Bluetooth 5.4 Bluetooth codecs aptX Lossless, LDAC, aptX Adaptive, aptX HD, aptX, AAC, SBC DAC Dual ESS ES9069Q USB controller XMOS XU316 Amplifier architecture Four-channel fully balanced THX AAA 78+ Maximum USB decoding PCM up to 32-bit/768kHz; native DSD512; DoP256 Headphone outputs 3.5mm single-ended; 4.4mm balanced Balanced output, Desktop Mode ≥650mW + 650mW at 32Ω Balanced output, normal mode ≥300mW + 300mW at 32Ω 3.5mm output, Desktop Mode ≥280mW + 280mW at 32Ω 3.5mm output, normal mode ≥140mW + 140mW at 32Ω Display 1.3-inch color IPS display EQ 10-band high-precision parametric EQ Power input DC 5V/2A or higher Charging time Approximately 2 hours or less Bluetooth battery life Approximately 9 hours through 3.5mm; approximately 8 hours through 4.4mm under FiiO test conditions Dimensions Approximately 86.6 × 41.2 × 16.3mm Weight Approximately 73.4g Available colors Black / Blue What's in the box, manuals and downloads FiiO BTR17 ×1 USB cable ×1 Protective case ×1 Quick start guide and product documentation Package contents may vary by production batch or region Visit the official FiiO support and download center for firmware, drivers, and manuals Additional Product Content Choosing the correct operating mode Mode Recommended use Power arrangement BT Wireless listening from a phone or tablet Uses the internal battery PHONE Wired USB DAC use with a smartphone Reduces power demand on the phone PC USB DAC use with a computer Powered through the data USB connection Desktop Mode Maximum headphone output at a desk Requires external power through POWER IN

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SNOWSKY ECHO is a compact high-resolution portable music player designed for users who enjoy a simple and dedicated music experience. With dual headphone outputs, Bluetooth connectivity, USB DAC functionality, and microSD expansion, ECHO combines retro-inspired design with modern portable HiFi features. Why it stands out Dedicated Music Experience ECHO focuses on pure music playback without unnecessary smartphone distractions, giving users a simple and focused listening experience. High-Resolution Portable Audio Supports lossless music playback with high-quality decoding capability for detailed and natural sound performance. Dual Headphone Connections The 3.5mm single-ended and 4.4mm balanced outputs provide flexible compatibility with different headphones and earphones. Retro Design with Modern Features Combines a nostalgic music player design with modern functions including Bluetooth, USB DAC, and customizable EQ. Best for Portable HiFi listening IEM and headphone users Local music library playback Travel and commuting Users wanting a distraction-free music player Not ideal for Users needing Spotify or streaming apps Users looking for Android-based smart players Users needing powerful desktop headphone amplification Users wanting a network streamer EMiUZEK Buying Notes SNOWSKY ECHO is a portable music player, not a smartphone-based streaming device. It is designed mainly for local music playback through microSD storage. It can also work as a USB DAC when connected to compatible computers or devices. Performance depends on the connected headphones or earphones. FAQ Does SNOWSKY ECHO support Bluetooth? Yes. It supports Bluetooth connectivity for wireless audio functions and compatible devices. Can SNOWSKY ECHO play music without a smartphone? Yes. ECHO is designed as a standalone music player using local music files stored on supported memory cards. Does SNOWSKY ECHO support microSD cards? Yes. It supports expandable storage through a microSD card for storing music files. Does SNOWSKY ECHO support balanced headphones? Yes. It includes a 4.4mm balanced headphone output in addition to the 3.5mm single-ended output. Can SNOWSKY ECHO be used as a USB DAC? Yes. It can connect to computers and compatible devices as a USB DAC. Does SNOWSKY ECHO support streaming apps like Spotify? No. ECHO is designed as a dedicated local music player rather than an Android streaming player. What headphones work best with SNOWSKY ECHO? It works well with IEMs, portable headphones, and efficient headphones suitable for portable devices. HOW TO CONNECT Portable Music Setup Source icon: microSD CardSource: Local Music FilesConnection: Internal PlaybackOutput connection: 3.5mm / 4.4mm Headphone OutputTarget icon: Headphones / IEMsOutput: Portable HiFi Listening Note: Enjoy dedicated music playback anywhere. Wireless Audio Setup Source icon: SNOWSKY ECHOSource: Local Music LibraryConnection: BluetoothTarget icon: Bluetooth DeviceOutput: Wireless Audio System Note: Connect with compatible Bluetooth devices. USB DAC Setup Source icon: ComputerSource: Digital MusicConnection: USBOutput connection: Headphone OutputTarget icon: HeadphonesOutput: USB DAC Audio System Note: Use ECHO as an external audio device. Technical Specifications Audio Feature Specification Product Type Portable High-Resolution Music Player DAC High-Performance DAC System Audio Playback Lossless Music Playback EQ Supported Outputs Feature Specification 3.5mm Output Supported 4.4mm Balanced Output Supported USB DAC Output Supported Storage & Connectivity Feature Specification microSD Expansion Supported Bluetooth Supported USB-C Supported Firmware Update Supported General Feature Specification Product Type Portable Music Player Display Color Display Battery Built-in Rechargeable Battery Recommended System Setup Setup Connection IEM Listening ECHO → IEM Portable Headphone ECHO → Headphones USB DAC Mode Computer → ECHO → Headphones Bluetooth System ECHO → Wireless Device What's in the box SNOWSKY ECHO ×1 USB-C Cable ×1 Protective Accessories ×1 User Manual ×1 Download Center Access product manuals, technical documents, and support resources. https://emiuzek.com/pages/download Additional Product Content SNOWSKY Portable Player Comparison Feature ECHO ECHO MINI Product Position Portable HiFi Music Player Compact Entry-Level Music Player Main Focus Higher-performance portable audio Small retro music player Balanced Output Yes Yes USB DAC Yes Yes microSD Expansion Yes Yes Best Focus Portable HiFi enthusiasts Simple everyday music playback

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The FiiO BR13 is a compact Bluetooth receiver, USB DAC and S/PDIF converter designed to add modern wireless and digital connectivity to an existing amplifier, receiver or active-speaker system. It receives audio through Bluetooth, USB-C, optical or coaxial input and outputs through stereo RCA, optical or coaxial connections. A Qualcomm QCC5125 Bluetooth platform supports LDAC and multiple aptX codecs, while the ES9018K2M DAC and TPA1882 op-amp provide a standard 2Vrms RCA line output. The BR13 is a source component only: it has no headphone amplifier, speaker amplifier, battery or network-streaming platform. Why it stands out LDAC and aptX Adaptive Bluetooth reception Bluetooth 5.2 supports LDAC, aptX Adaptive, aptX HD, aptX Low Latency, aptX and SBC from compatible phones, tablets and computers. Bluetooth, USB DAC and S/PDIF conversion Use one small component for wireless reception, computer audio, television audio and conversion between optical, coaxial and analog RCA systems. ES9018K2M DAC with 2Vrms RCA output The internal ESS DAC and TPA1882 analog stage allow direct connection to a line-level amplifier input or active speakers without requiring a separate DAC. App control, PEQ and digital routing tools FiiO Control provides Bluetooth codec settings, presets, custom PEQ, channel balance, upsampling, low-latency mode and OTA firmware updates. Best for Adding high-resolution Bluetooth reception to an older amplifier or active speakers Converting television optical or coaxial audio to RCA line output Using a computer or compatible console with a simple UAC1.0 USB DAC Routing optical and coaxial digital signals between existing audio components Not ideal for Users who need Bluetooth transmission to wireless headphones Anyone who wants Wi-Fi, AirPlay, Roon Ready or native streaming-service support Driving headphones, passive speakers or a power amplifier that requires balanced input Portable use without a continuous USB power source EMiUZEK Buying Notes The BR13 is a Bluetooth receiver, not a transmitter. It accepts audio from a phone or computer and sends it to wired audio equipment. RCA is a 2Vrms line-level output with digital volume adjustment, not a powered headphone or speaker output. A downstream amplifier or active speakers are required. FiiO Control connects only while the BR13 is in Bluetooth input mode. Saved settings such as upsampling can remain active after switching inputs, but EQ works only with Bluetooth and USB input. Digital upsampling can prevent sound from some optical or coaxial devices. If a digital output is silent or incompatible, disable upsampling or enable the appropriate compatibility setting. Frequently asked questions Can the FiiO BR13 transmit Bluetooth audio? No. It receives Bluetooth audio from a phone, tablet, television or computer. It cannot send audio to Bluetooth headphones or wireless speakers. Does the BR13 support Wi-Fi streaming? No. It has no Wi-Fi, AirPlay, Chromecast, Spotify Connect or Roon Ready function. Use Bluetooth, USB, optical or coaxial input. Can I connect headphones directly? No. It has no headphone socket or headphone amplifier. Connect RCA output to a separate headphone amplifier. Can it drive passive speakers? No. Connect it to an integrated amplifier, receiver, power amplifier with suitable input sensitivity or active speakers. Which Bluetooth codecs are supported? It supports SBC, aptX, aptX LL, aptX HD, aptX Adaptive and LDAC. Codec availability depends on the transmitting device and enabled settings. Does it support AAC? AAC is not included in FiiO's official BR13 codec list. Apple devices can connect using a mutually supported codec, normally SBC. Can two phones stay connected simultaneously? Yes. Bluetooth multipoint supports two transmitting devices. Pause playback on one before starting the other. What is the maximum Bluetooth range? FiiO states a transmission distance of up to approximately 30 metres under favourable open conditions. Walls, interference and the source device can reduce the practical range. What does low-latency mode do? It prioritizes aptX Low Latency where the transmitter also supports it, reducing delay for video and gaming. Both ends must support the codec for the benefit to apply. Can I use it as a USB DAC? Yes. USB-C supports UAC1.0 plug-and-play operation up to PCM 96kHz/24-bit with compatible computers, phones, PS5 and Nintendo Switch systems. Does the USB-C port carry both power and audio? Yes. It is a two-way USB-C power/data connection. The BR13 has no battery and requires a stable 5V/1A USB supply during operation. What are the maximum optical and coaxial input rates? Coaxial input supports up to PCM 192kHz/24-bit, while optical input supports up to PCM 96kHz/24-bit. What are the maximum digital output rates? Optical and coaxial output support up to PCM 96kHz/24-bit when using the BR13's frequency-doubling or conversion functions. Can it convert optical input to RCA output? Yes. Optical input can be decoded to RCA and can also be routed to optical or coaxial digital output. Can it convert coaxial input to optical output? Yes. In Coaxial In mode, the BR13 can provide optical and RCA output. What is optical bypass? In Optical In mode, the optical signal can pass through to Optical Out while the BR13 also supports other compatible outputs, simplifying systems that share one optical source. Can optical and coaxial outputs work simultaneously? Output availability depends on the selected input and routing mode. Optical input can provide coaxial, optical and RCA output; coaxial input provides optical and RCA output. Why is there no sound from optical or coaxial output? Confirm that the source uses supported stereo PCM, select the correct input and disable digital upsampling in FiiO Control if the receiving device cannot accept the converted rate. Does PEQ work with optical and coaxial input? No. FiiO specifies EQ support only for Bluetooth and USB input. Other saved system settings may still affect S/PDIF modes. Does upsampling improve every source? Upsampling changes the output sample rate but cannot recreate information absent from the source. Its audible benefit is system-dependent and compatibility should take priority. Can the BR13 control active-speaker volume? Yes, its 60-step digital volume can adjust RCA output. Begin at a low level, especially when connecting directly to active speakers. Is the BR13 the same kind of product as the FiiO SR11? No. BR13 focuses on Bluetooth reception, USB DAC and S/PDIF conversion with analog RCA output. SR11 is a Wi-Fi/Ethernet digital streaming transport with Roon Ready and AirPlay but no analog output. HOW TO CONNECT Phone to an existing amplifier Source icon: PhoneSource: Smartphone / tabletConnection: Bluetooth 5.2Output connection: Stereo RCA line outputTarget icon: AmplifierOutput: AUX / LINE / CD input on an amplifier or receiver Note: Select Bluetooth input, pair the phone and begin with low system volume. Bluetooth is received by the BR13 and output through wired RCA. Television to active speakers Source icon: TVSource: Television optical outputConnection: TOSLINK optical inputOutput connection: Stereo RCA line outputTarget icon: Active speakersOutput: Powered-speaker RCA input Note: Set the television to compatible stereo PCM. If there is no sound, disable BR13 digital upsampling and recheck the TV format. Computer USB DAC Source icon: ComputerSource: PC / Mac / compatible consoleConnection: USB-C UAC1.0Output connection: Stereo RCA line outputTarget icon: Audio systemOutput: Amplifier, receiver or active speakers Note: Select USB input and choose BR13 as the source device's audio output; USB supports up to PCM 96kHz/24-bit. S/PDIF format conversion Source icon: Digital sourceSource: TV / set-top box / disc playerConnection: Optical or coaxial inputOutput connection: Optical, coaxial or RCA according to input modeTarget icon: DAC or audio systemOutput: Compatible external DAC, amplifier or active speakers Note: Coaxial input can output optical and RCA; optical input can output optical, coaxial and RCA. Match the sample-rate capability of the receiving device. Technical Specifications Feature Specification Product type Bluetooth receiver, USB DAC and S/PDIF converter DAC / op-amp ESS ES9018K2M / TPA1882 Bluetooth chipset Qualcomm QCC5125 Bluetooth 5.2 receive-only; multipoint supported Bluetooth codecs SBC, aptX, aptX LL, aptX HD, aptX Adaptive, LDAC Inputs Bluetooth, USB-C, optical, coaxial Outputs Stereo RCA, optical, coaxial USB DAC UAC1.0; up to PCM 96kHz/24-bit Coaxial input Up to PCM 192kHz/24-bit Optical input Up to PCM 96kHz/24-bit Optical / coaxial output Up to PCM 96kHz/24-bit RCA output 2Vrms; 60-step digital volume EQ Preset EQ plus two 10-band custom PEQ profiles; Bluetooth and USB input only Display 1.1-inch LCD Control Front buttons and FiiO Control app Firmware OTA update through FiiO Control Power USB-C 5V/1A; no battery Dimensions Approx. 98 × 96 × 26.5mm Weight Approx. 135g Color Black What's in the box, manuals and downloads FiiO BR13 ×1 USB-A to USB-C Data/Power Cable ×1 User Manual ×1 Warranty Card ×1 Visit the EMiUZEK download center. Additional Product Content FiiO BR13 vs SR11 Feature BR13 SR11 Main purpose Bluetooth receiver, USB DAC and S/PDIF converter Wi-Fi/Ethernet digital streaming transport Network streaming No Roon Ready and AirPlay Bluetooth reception Yes, including LDAC Yes with supported firmware Analog RCA output Yes, 2Vrms No Digital outputs Optical and coaxial USB-A, USB-C, optical and coaxial Best reason to choose Add Bluetooth and analog output to an existing system Add Roon/AirPlay network streaming to an external DAC

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FiiO DARKSIDE PRO is a low-noise linear power supply designed to provide cleaner and more stable power for high-performance audio equipment. Featuring a 75W toroidal transformer, low-noise regulation design, and selectable 12V/15V DC output, it is ideal for DACs, headphone amplifiers, network streamers, and other HiFi components. Why it stands out Low-Noise Linear Power Design DARKSIDE PRO provides stable and clean power delivery to help sensitive audio equipment operate in an optimized environment. High-Quality Power Components The 75W toroidal transformer and dedicated regulation circuit are designed for reliable power performance and reduced electrical interference. Flexible Device Compatibility With selectable 12V and 15V outputs, DARKSIDE PRO supports a wide range of compatible HiFi devices. Premium HiFi System Upgrade A cleaner power foundation can help maximize the performance potential of compatible DACs, amplifiers, and streaming devices. Best for Desktop HiFi systems DAC and headphone amplifier setups Network streamer systems Audiophile power supply upgrades Users optimizing existing audio equipment Not ideal for Users looking for a DAC or amplifier Users without compatible 12V/15V audio equipment Users expecting a dramatic upgrade from incompatible systems Users needing a portable power solution EMiUZEK Buying Notes FiiO DARKSIDE PRO is a linear power supply, not an audio playback device. Please confirm your equipment requires 12V or 15V DC input before purchase. Maximum output is 3A, and connected devices must match voltage and current requirements. Power supply upgrades work best with high-quality audio equipment that benefits from cleaner power. FAQ What is FiiO DARKSIDE PRO used for? DARKSIDE PRO is an external linear power supply designed for compatible HiFi devices such as DACs, headphone amplifiers, and network streamers. Can FiiO DARKSIDE PRO improve sound quality? A high-quality power supply can help provide cleaner and more stable power, allowing compatible audio equipment to perform more consistently. The actual improvement depends on the connected device and system configuration. What voltage outputs does DARKSIDE PRO support? It supports selectable 12V and 15V DC outputs. How much current can DARKSIDE PRO provide? It supports up to 3A output current. Can DARKSIDE PRO power any audio device? No. The connected device must support compatible voltage, current, and connector requirements. Can DARKSIDE PRO be used with FiiO products? Yes. It is designed for compatible FiiO devices and other audio equipment requiring matching power specifications. HOW TO CONNECT DAC / Headphone Amplifier Setup Source icon: AC PowerSource: DARKSIDE PROConnection: DC OutputTarget icon: DAC / Headphone AmplifierOutput: Cleaner Power Supply Note: Provide stable power for desktop audio equipment. Network Streamer Setup Source icon: AC PowerSource: DARKSIDE PROConnection: 12V / 15V DCTarget icon: Streaming DeviceOutput: Stable Audio System Power Note: Improve power stability for compatible streaming equipment. Technical Specifications Power Supply Feature Specification Product Type Linear Power Supply Transformer 75W Toroidal Transformer Output Voltage 12V / 15V DC Selectable Output Current Up to 3A Output Power Up to 45W General Feature Specification Application DAC / Amplifier / Streamer / HiFi Equipment Regulation Type Low-Noise Linear Regulation Voltage Selection Supported Color Options Black / Silver Recommended System Setup Setup Connection DAC System DARKSIDE PRO → DAC → Amplifier → Speakers Headphone System DARKSIDE PRO → Headphone Amplifier → Headphones Streaming System DARKSIDE PRO → Network Streamer → Audio System What's in the box FiiO DARKSIDE PRO ×1 AC Power Cable ×1 DC Output Cable ×1 User Manual ×1 Download Center Access product manuals, technical documents, and support resources. https://emiuzek.com/pages/download Additional Product Content FiiO DARKSIDE PRO Compatibility Guide Device Type Application DAC Stable low-noise power supply Headphone Amplifier Cleaner power delivery Network Streamer Improved power stability Preamp Reliable external power source

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SNOWSKY FiiO Wind PRO is a lightweight wireless on-ear headphone combining retro design with modern Bluetooth audio technology. Featuring a 40mm high-fidelity dynamic driver, LDAC Bluetooth support, and long battery life, Wind PRO delivers a comfortable wireless listening experience for everyday music enjoyment. Why it stands out Retro Design with Modern Wireless Audio Wind PRO combines classic on-ear headphone styling with modern Bluetooth connectivity for a unique everyday listening experience. High-Quality Dynamic Sound The 40mm dynamic driver delivers balanced sound with clear vocals, powerful bass, and enjoyable musical performance. Lightweight Comfortable Design The lightweight construction and adjustable headband provide comfortable wearing for long listening sessions. Long Battery Life Wireless Listening With extended battery performance and Bluetooth connectivity, Wind PRO is designed for convenient daily music playback. Best for Wireless music listening Daily commuting Smartphone users Casual HiFi listening Users who prefer lightweight headphones Not ideal for Users needing active noise cancellation Professional studio monitoring Users looking for wired audiophile headphones Users needing a fully enclosed headphone design EMiUZEK Buying Notes SNOWSKY Wind PRO is a wireless Bluetooth headphone, not a wired-only headphone. It uses an on-ear design, which provides a lighter and more portable wearing experience. It does not include active noise cancellation. LDAC performance depends on the connected Bluetooth device support. FAQ Does SNOWSKY Wind PRO support Bluetooth? Yes. Wind PRO supports Bluetooth wireless playback for smartphones, tablets, and other compatible devices. Does SNOWSKY Wind PRO support LDAC? Yes. It supports high-resolution Bluetooth codecs including LDAC for compatible devices. Does Wind PRO have active noise cancellation? No. Wind PRO focuses on lightweight design and sound quality rather than active noise cancellation. What driver does SNOWSKY Wind PRO use? It uses a 40mm high-fidelity dynamic driver. Is SNOWSKY Wind PRO suitable for smartphones? Yes. It is designed for easy wireless connection with smartphones and portable devices. How long can the battery last? Wind PRO provides up to approximately 58 hours of battery life depending on usage conditions. What is the difference between SNOWSKY Wind and Wind PRO? Wind is a wired on-ear headphone, while Wind PRO adds Bluetooth wireless functionality and longer battery life. HOW TO CONNECT Bluetooth Smartphone Setup Source icon: SmartphoneSource: Music StreamingConnection: BluetoothTarget icon: SNOWSKY Wind PROOutput: Wireless Music Listening Note: Connect directly with smartphones, tablets, or laptops. HiFi Portable Setup Source icon: Portable PlayerSource: High Resolution MusicConnection: Bluetooth LDACTarget icon: SNOWSKY Wind PROOutput: Wireless HiFi Listening Note: Use compatible devices for higher-quality Bluetooth playback. Technical Specifications Headphone Feature Specification Product Type Wireless On-Ear Headphone Driver Type Dynamic Driver Driver Size 40mm Design On-Ear Acoustic Design Semi-Open Bluetooth Feature Specification Bluetooth Version Bluetooth 5.3 Codec Support LDAC / AAC / SBC Wireless Range Supported Battery Feature Specification Battery Life Up to 58 hours Charging USB-C General Feature Specification Microphone Built-in Control Button Control Wearing Style Adjustable Headband Application Music / Calls / Daily Use Recommended System Setup Setup Connection Smartphone Listening Phone → Bluetooth → Wind PRO Laptop Listening Laptop → Bluetooth → Wind PRO Portable Audio Hi-Res Player → Bluetooth LDAC → Wind PRO What's in the box SNOWSKY Wind PRO ×1 USB-C Charging Cable ×1 User Manual ×1 Download Center Access product manuals, technical documents, and support resources. https://emiuzek.com/pages/download Additional Product Content SNOWSKY Wind vs Wind PRO Feature Wind Wind PRO Product Type Wired On-Ear Headphone Wireless On-Ear Headphone Connection 3.5mm Cable Bluetooth + Wireless Driver 40mm Dynamic 40mm Dynamic LDAC No Yes Battery No Yes Best Focus Affordable wired listening Wireless daily HiFi listening

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