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Fiio FiiO K7 BT

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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$269.00

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Fiio FiiO M15S

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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$919.35

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Fiio FiiO M25 R2R – Pre-Order

PRE-ORDER — Estimated shipping: November 1, 2026. Order now to secure your unit. This is a pre-order item; your card will be charged at checkout. Orders are expected to ship on November 1, 2026. This is an estimated shipping date, not a guaranteed dispatch or delivery date. Actual shipping may vary based on manufacturer production and inbound schedule. The FiiO M25 R2R is a flagship portable high-resolution music player built around FiiO's second-generation self-developed R2R PRO DAC architecture. Featuring 384 high-precision resistors and a large-scale FPGA, the QCS6490 processor with 8GB RAM and 128GB storage, a 5.5-inch touchscreen, and dual headphone outputs, the M25 R2R brings natural, analog-sounding R2R playback to a portable Android DAP with full streaming app support. Why it stands out Self-Developed Second-Gen R2R PRO DAC FiiO's proprietary R2R PRO architecture uses 384 high-precision resistors paired with a large-scale FPGA to deliver natural, smooth, analog-sounding playback. The R2R ladder design avoids the pre-ringing and digital harshness common to delta-sigma DACs, bringing rich harmonic texture and organic timbre to your music. QCS6490 Flagship Processor with 8GB+128GB Powered by Qualcomm's QCS6490 (same architecture as Snapdragon 778G), paired with 8GB RAM and 128GB internal storage. Run streaming apps, browse your library, and multitask smoothly with headroom for future firmware updates. Supports microSD cards up to 2TB for massive music collections. 1700mW Desktop Mode Output Power When connected to external power in Desktop Mode, the M25 R2R delivers up to 1700mW of output power — enough to drive demanding full-size headphones with authority and dynamic headroom. The 4.4mm balanced and 3.5mm single-ended outputs cover all headphone types, while the coaxial output lets you connect to an external DAC or amplifier. 31-Band PEQ + Auto EQ + Femtosecond Clock Fine-tune your sound with a 31-band parametric equalizer and FiiO's Auto EQ functionality. The custom femtosecond crystal oscillator and high-capacity FPGA ensure ultra-low jitter digital processing, while XMOS XU316 handles USB audio with precision. The 5.5-inch fully-laminated touchscreen provides intuitive control and clear album art display. Best for Audiophiles seeking natural, organic R2R sound in a portable player Users who want full Android streaming app support alongside local playback Headphone collectors needing high output power for full-size cans Listeners who value extensive EQ and sound customization options Anyone looking for a future-proof flagship DAP with 8GB+128GB specs Not ideal for Budget-conscious buyers looking for an entry-level player Users who prioritize maximum battery life over flagship performance Those who need Apple Music lossless playback (limited by Android system) Listeners who prefer the analytical, ultra-detailed sound of delta-sigma DACs Users wanting a compact, ultra-light player for sport or extreme portability EMiUZEK Buying Notes This listing is for the FiiO M25 R2R portable high-resolution music player in black. The M25 R2R features FiiO's second-generation self-developed R2R PRO DAC and ships with standard retail packaging including the player, USB-C cable, quick start guide, and warranty card. Product images are for reference only; the actual product may vary slightly in appearance. The M25 R2R supports both portable battery operation and Desktop Mode with external power supply. For maximum output power and performance, connect the player to an external power source via the dedicated power input. The 4.4mm balanced output is recommended for high-impedance or low-sensitivity headphones; the 3.5mm output supports both single-ended headphone use and coaxial digital output. Specifications Model FiiO M25 R2R Processor Qualcomm QCS6490 (Snapdragon 778G architecture) RAM / Storage 8GB RAM / 128GB ROM (≈112GB usable) Storage Expansion microSD/TF card up to 2TB DAC Architecture FiiO 2nd-gen R2R PRO (384 precision resistors + FPGA) USB Controller XMOS XU316 Clock FiiO custom femtosecond crystal oscillator Max Output Power Up to 1700mW (Desktop Mode, external power) Headphone Outputs 4.4mm balanced (BAL PO/LO), 3.5mm single-ended (PO/LO) Digital Output 3.5mm coaxial (shared with single-ended) Display 5.5-inch fully-laminated touchscreen OS Android Equalizer 31-band parametric EQ, Auto EQ Special Features Desktop Mode (external power), DAPS digital audio purification USB USB 3.0 Type-C (data/charging), dedicated power input Supported Formats DSD, DST ISO, DXD, APE, FLAC, WAV, AIFF, ALAC, MP3, OGG, WMA Color Black FAQ Q: What is the difference between R2R and delta-sigma DACs? A: R2R (resistor ladder) DACs use a network of precision resistors to reconstruct the analog signal directly, resulting in more natural, organic sound with richer harmonics and no pre-ringing. Delta-sigma DACs use oversampling and noise shaping, typically offering higher measured specs but can sound more digital or analytical. The M25 R2R uses FiiO's second-generation R2R PRO architecture for authentic R2R sound. Q: Can the M25 R2R drive full-size headphones? A: Yes. In Desktop Mode with external power, the M25 R2R delivers up to 1700mW of output power through the 4.4mm balanced output, which is sufficient for most full-size headphones including demanding planar magnetic models. For portable use, output power is lower but still adequate for efficient over-ear and in-ear monitors. Q: Does the M25 R2R support streaming apps like Spotify and Tidal? A: Yes. The M25 R2R runs a full Android operating system with the QCS6490 processor and 8GB RAM, allowing you to install and run popular streaming apps including Spotify, Tidal, Qobuz, Apple Music, and more from the Google Play Store or via APK installation. Q: What is Desktop Mode and how do I use it? A: Desktop Mode allows the M25 R2R to run from an external power supply instead of its internal battery, enabling maximum output power (up to 1700mW) and preventing battery cycling during stationary use. Simply connect a compatible power adapter to the dedicated power input port on the top of the player. The player will automatically switch to Desktop Mode when external power is detected. Q: What is the warranty policy? A: The FiiO M25 R2R comes with a 1-year warranty. Eligible returns may be requested within 14 days after receipt, with no restocking fee. See our Return Policy for eligibility, return shipping responsibilities, and exclusions. Within one year, enjoy free warranty service. Artificial damage (drops, water exposure, unauthorized disassembly, etc.) is not covered.

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$1,149.00

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Fiio FiiO QX11

FiiO QX11 — Portable USB DAC & Headphone Amplifier The FiiO QX11 is a compact high-performance USB DAC and headphone amplifier that combines flagship-level dual DAC architecture with a powerful all-Texas-Instruments amplification stage. Designed for both high-fidelity music playback and competitive gaming, the QX11 delivers desktop-class audio performance in a pocket-sized form factor. Dual Flagship ES9069Q DACs Built around two ESS ES9069Q flagship dual-channel DAC chips, the QX11 supports true high-resolution audio processing with 32-bit/768kHz PCM and native DSD512 decoding. The dual-DAC configuration ensures exceptional channel separation, ultra-low distortion, and rich detail retrieval across the entire frequency spectrum. Powerful All-TI Amplification The analog stage features an end-to-end Texas Instruments architecture: 2× OPA1692 for pre-amplification and 4× OPA1622 in parallel for headphone driving. Delivers up to 800mW + 800mW balanced output in Desktop Mode, with enough power to drive demanding full-size headphones. The 4.4mm balanced and 3.5mm single-ended outputs cover all headphone types. Dual Mode: HiFi & Gaming Switch between dedicated HiFi Mode for pure, uncolored music playback and Gaming Mode with genre-specific sound profiles optimized for FPS, ACT, MOBA, and rhythm games. The gaming mode enhances spatial awareness, footsteps, and directional cues for competitive play. Smart Features & Connectivity Dual USB-C Ports: One for audio input, one for 45W USB PD pass-through charging — use the DAC while charging your phone or laptop simultaneously Built-in Microphone: Integrated microphone with AI-based noise cancellation for clear voice chat and calls Auto EQ: Advanced automatic equalization supported by FiiO web and FiiO Control applications Desktop Mode: Higher output power for stationary use with full-size headphones Portable Mode: Optimized power efficiency for on-the-go use with IEMs and portable headphones Specifications DAC Chips Dual ESS ES9069Q Pre-amplifier 2× TI OPA1692 Headphone Amp 4× TI OPA1622 (parallel) Max Sample Rate PCM: 32-bit/768kHz | DSD: Native DSD512 Output Power (Balanced) Up to 800mW + 800mW (Desktop Mode) Outputs 3.5mm single-ended, 4.4mm balanced Inputs Dual USB-C (audio + 45W PD pass-through) Modes HiFi Mode, Gaming Mode (FPS/ACT/MOBA/Rhythm presets) Microphone Built-in with AI noise cancellation EQ Auto EQ (FiiO web / FiiO Control app) Charging 45W USB PD pass-through Color Green What's in the Box 1× FiiO QX11 Portable USB DAC & Headphone Amplifier 1× USB-C to USB-C Cable 1× USB-C to USB-A Adapter 1× Quick Start Guide 1× Warranty Card Warranty & Support Eligible returns may be requested within 14 days after receipt, with no restocking fee. See our Return Policy for eligibility, return shipping responsibilities, and exclusions. 1-year warranty. FiiO official after-sales support. Our team is available for technical assistance and setup guidance.

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$155.00

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Fiio FiiO RR13

FIIO RR13 is a pocket-sized stereo FM radio that combines classic analog tuning with modern audio engineering, built-in speakers, headphone output, and a dedicated analog headphone amplifier mode. Its professional Si4831 FM receiver, custom-shaped internal antenna, detachable telescopic antenna, mechanical luminous dial, and replaceable rechargeable battery make it suitable for everyday radio listening at home or on the move. Why it stands out Professional Si4831 FM Receiver The Silicon Labs Si4831 radio chip provides stable FM reception and covers both the standard 87–108MHz band and the 76–90MHz Japanese FM band. Built-in Stereo Speakers Dual ultra-thin five-magnet speakers and independent amplifier channels allow RR13 to play radio or connected audio without external headphones. Internal and External Antennas A custom-shaped antenna is built into the compact body. The included detachable 3.5mm telescopic antenna can improve reception when using the built-in speakers. Dedicated Headphone Amplifier Mode Switch to AMP mode and connect a compatible analog-output adapter cable to use RR13 as a portable headphone amplifier, delivering up to 80mW + 80mW at 32Ω. Best for Listeners who enjoy manual FM radio tuning Portable radio listening through headphones or built-in speakers Users looking for a compact retro-style audio device Regions using either the 87–108MHz or 76–90MHz FM band Users who also want a simple analog headphone amplifier Not ideal for Internet radio, DAB, AM, or shortwave broadcasts Users who need Bluetooth, Wi-Fi, or internal music storage Direct digital USB audio without a compatible DAC adapter cable High-impedance or very demanding full-size headphones EMiUZEK Buying Notes RR13 supports FM radio only; it does not support AM, DAB, Bluetooth, Wi-Fi, or internet radio. The USB-C port is primarily for charging and analog input in AMP mode. Digital sources require a compatible USB-C cable or adapter with a built-in DAC. The 3.5mm port is used for headphones in HP mode and for the included telescopic antenna in SPK mode. Use a protected 3.7V 10440 rechargeable lithium battery with the correct polarity when replacing the supplied battery. FAQ Does FIIO RR13 support AM radio? No. RR13 is an FM-only radio supporting 87–108MHz and 76–90MHz frequency ranges. Can RR13 play without headphones? Yes. Select SPK mode to listen through its built-in stereo speakers. How do I improve FM reception? In speaker mode, connect the supplied telescopic antenna to the 3.5mm port and fully extend it. Location, surrounding buildings, electrical interference, and local broadcast strength can affect reception. Can RR13 work as a USB DAC? RR13 does not contain a digital USB DAC. In AMP mode, it can accept analog audio through USB-C when used with a compatible adapter cable containing its own DAC. Can I use RR13 as a headphone amplifier? Yes. Select AMP mode, connect a compatible analog source through USB-C, select HP output, and connect 3.5mm headphones. Is the battery replaceable? Yes. RR13 uses a protected rechargeable 450mAh 10440 lithium battery. Observe the correct positive and negative orientation when replacing it. Does RR13 have a sleep timer? Yes. The automatic power-off timer can be set to 30 or 60 minutes. HOW TO CONNECT FM Radio with Headphones Source icon: Radio Tower Source: FM Broadcast Connection: Built-in Antenna / Headphone Cable Output connection: 3.5mm Headphone Output Target icon: Headphones Output: Wired Headphones / Earphones Note: Select FM1 or FM2 and set the output switch to HP. FM Radio with Built-in Speakers Source icon: Radio Tower Source: FM Broadcast Connection: Internal Antenna / Detachable Telescopic Antenna Output connection: Built-in Speaker Output Target icon: Speaker Output: Built-in Stereo Speakers Note: Set the output switch to SPK and connect the telescopic antenna to the 3.5mm port when stronger reception is required. Portable Headphone Amplifier Source icon: Smartphone Source: Smartphone / Tablet / Computer Connection: Compatible USB-C DAC Adapter Cable Output connection: 3.5mm Headphone Output Target icon: Headphones Output: Wired Headphones / Earphones Note: Select AMP mode. The connected adapter must provide analog audio output. Technical Specifications Feature Specification Product type Portable stereo FM radio and analog headphone amplifier Radio chip Silicon Labs Si4831 Analog audio chip Custom FIIO DDB AS100 FM1 frequency range 87–108MHz FM2 frequency range 76–90MHz Antenna Built-in custom-shaped antenna and detachable 3.5mm telescopic antenna Headphone output 3.5mm single-ended Recommended headphone impedance 8–100Ω AMP output at 32Ω ≥80mW + 80mW Built-in speakers 8Ω, 1W ×2 Sound settings BASS OFF / BASS 1 / BASS 2 with 3D effect Controls Analog tuning knob, volume knob, mode switch, output switch, sound-effect switch Sleep timer Off / 30 minutes / 60 minutes USB connection USB-C charging and compatible analog audio input Power requirement DC 5V/2A Battery Replaceable protected 450mAh 10440 rechargeable lithium battery Charging time Approximately 2.5 hours Radio battery life Approximately 7 hours with headphones; approximately 4 hours with speakers AMP battery life Approximately 18 hours with headphones; approximately 4 hours with speakers Dimensions Approximately 85.6 × 43.4 × 16.4mm Weight Approximately 76g Available colors Retro Gold / Black / Red / Silver What's in the box, manuals and downloads FIIO RR13 ×1 USB-A to USB-C charging cable ×1 Detachable telescopic antenna ×1 Quick start guide ×1 Warranty card ×1 Visit the official FIIO support center for manuals and product information Additional Product Content RR13 operating modes Mode Frequency or input Available output FM1 87–108MHz FM radio 3.5mm headphones or built-in speakers FM2 76–90MHz FM radio 3.5mm headphones or built-in speakers AMP Compatible analog input through USB-C 3.5mm headphones or built-in speakers

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Fiio FiiO S15

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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$934.67 - $999.00

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Fiio FiiO SNOWSKY DISC

FiiO SNOWSKY DISC — Portable Lossless Music Player The FiiO SNOWSKY DISC is a compact high-resolution portable music player featuring a retro CD-player design, a round touchscreen, and a dual-DAC audio architecture. Built around two independent Cirrus Logic CS43131 DAC chips (one per channel), the DISC delivers audiophile-grade sound quality in a pocket-sized aluminum body. Designed for pure music playback with no unnecessary features, it focuses on what matters most: your music. Dual CS43131 DACs — 280mW Output Power The DISC features dual Cirrus Logic CS43131 DAC chips, with one dedicated DAC per channel for fully independent left/right signal processing. This architecture ensures exceptional channel separation, ultra-low distortion, and rich detail retrieval. With up to 280mW of output power, the DISC can drive a wide range of headphones, from efficient IEMs to demanding full-size models. High-Resolution Audio Support Supports PCM up to 384kHz/32-bit and native DSD128 playback, with a signal-to-noise ratio of 129dB (A-weighted). The high-performance audio path ensures clean, transparent sound with excellent dynamic range and low background noise, bringing out every detail in your music collection. Round Touchscreen & Retro Design The 1.8-inch IPS LCD round touchscreen (360×360 pixels, fully laminated) displays album art, lyrics, and playback controls with crisp clarity. The retro CD-player-inspired design, combined with a slim aluminum alloy body, offers a premium feel and comfortable one-handed operation. At just 77.2g and 68×68×12.9mm, it easily fits in a pocket or bag. Dual Headphone Outputs & Digital Connectivity 3.5mm single-ended and 4.4mm balanced headphone outputs for wide headphone compatibility 3.5mm coaxial digital output (shared with headphone out) for connecting to external DACs USB-C audio for use as a USB sound card with PCs and mobile devices LDAC Bluetooth for high-quality wireless audio transmission AirPlay support for wireless streaming from Apple devices Wi-Fi connectivity for online OTA firmware updates Massive Storage & Long Battery Life Supports microSD cards up to 2TB, allowing you to carry your entire music library wherever you go. The fast music scanning engine quickly indexes large collections. The built-in 1450mAh battery provides up to 12 hours of continuous playback, ensuring all-day listening without recharging. Specifications Processor Ingenic X2000 (Dual-Core XBurst2, 1.5GHz) Operating System Custom Linux (FiiO proprietary pure music system) DAC Chips Dual Cirrus Logic CS43131 (independent per channel) Max Sample Rate PCM: 384kHz/32-bit | DSD: Native DSD128 Signal-to-Noise Ratio 129dB (A-weighted) Output Power Up to 280mW Headphone Outputs 3.5mm single-ended + 4.4mm balanced Digital Outputs 3.5mm coaxial (shared with PO), USB-C audio Display 1.8-inch IPS LCD, 360×360, fully laminated, touchscreen Storage microSD card up to 2TB Battery 1450mAh, up to 12 hours playback Wireless LDAC Bluetooth, AirPlay, Wi-Fi (OTA updates) Dimensions 68 × 68 × 12.9 mm Weight 77.2g Body Material Aluminum alloy Colors Black, Blue, Pink, White What's in the Box 1× FiiO SNOWSKY DISC Portable Music Player 1× USB-C Charging/Data Cable 1× Screen Protector (pre-applied) 1× Quick Start Guide 1× Warranty Card Warranty & Support Eligible returns may be requested within 14 days after receipt, with no restocking fee. See our Return Policy for eligibility, return shipping responsibilities, and exclusions. 1-year warranty. FiiO official after-sales support. Our team is available for technical assistance and setup guidance.

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Fiio FiiO SR11

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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$109.99 - $119.00

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Fiio FiiO TT13

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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$245.97 - $289.99

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Fiio FiiO UTWS17

FiiO UTWS17 — Flagship True Wireless Bluetooth Earhooks The FiiO UTWS17 (Link TWS) is a flagship true wireless Bluetooth earhook system designed to untether your favorite in-ear monitors without sacrificing sonic integrity. Featuring Qualcomm's latest QCC5181 Bluetooth chipset with Bluetooth 6.0, dual independent AK4333 DACs, and support for lossless audio codecs, the UTWS17 delivers audiophile-grade wireless sound for your IEMs. Flagship QCC5181 Bluetooth 6.0 Powered by Qualcomm's flagship QCC5181 Bluetooth chipset, the UTWS17 features Bluetooth 6.0 connectivity with enhanced stability, lower latency, and improved power efficiency. The advanced Bluetooth architecture ensures a reliable connection even in crowded wireless environments. Dual Independent AK4333 DACs — AKM Velvet Sound Each earhook features an independent AK4333 DAC (one per channel), bringing the signature AKM Velvet Sound to wireless audio. The dual-DAC configuration ensures exceptional channel separation, natural timbre, and rich detail retrieval. High-resolution audio streams are processed effortlessly for a truly audiophile-grade wireless experience. Lossless Audio Codec Support The UTWS17 supports a comprehensive range of high-definition audio codecs: aptX Lossless — up to 1.2Mbps bitrate for CD-quality lossless wireless audio LDAC — up to 990Kbps for high-resolution wireless transmission LHDC V5 — up to 192kHz/24bit for ultra-high-definition audio aptX Adaptive — dynamically adjusts bitrate for optimal quality and stability AAC / SBC — universal compatibility with all devices Powerful Output for Demanding IEMs With 85mW + 85mW output power at 32Ω, the UTWS17 provides enough driving power for a wide range of in-ear monitors, from efficient multi-BA IEMs to demanding hybrid and dynamic driver models. The dedicated amplification stage ensures clean, dynamic sound with excellent control and headroom. Designed for IEM Enthusiasts The UTWS17 is designed to work with your existing wired IEMs, transforming them into high-performance true wireless earphones. The ergonomic earhook design ensures a secure, comfortable fit for extended listening sessions. Available in multiple connector options to compatibility with your favorite IEMs. Specifications Bluetooth Chipset Qualcomm QCC5181 Bluetooth Version Bluetooth 6.0 DAC Dual Independent AK4333 (one per channel) Sound Signature AKM Velvet Sound Output Power 85mW + 85mW @ 32Ω Supported Codecs aptX Lossless, LDAC, LHDC V5, aptX Adaptive, AAC, SBC Max Bitrate aptX Lossless: 1.2Mbps | LDAC: 990Kbps | LHDC: 192kHz/24bit Connector Options MMCX, 0.78mm 2-pin Design Ergonomic earhook, secure fit Charging USB-C Use Case Transform wired IEMs into true wireless earphones What's in the Box 1× FiiO UTWS17 True Wireless Bluetooth Earhooks (pair) 1× USB-C Charging Cable 1× Earhook Accessories (ear tips, etc.) 1× Quick Start Guide 1× Warranty Card Warranty & Support Eligible returns may be requested within 14 days after receipt, with no restocking fee. See our Return Policy for eligibility, return shipping responsibilities, and exclusions. 1-year warranty. FiiO official after-sales support. Our team is available for technical assistance and setup guidance.

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$209.00

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Fosi Audio Fosi Audio Box X5

Fosi Audio Box X5 is a compact phono preamplifier for moving-magnet and moving-coil turntable cartridges.Four selectable gain settings, precise RIAA equalization and low-noise components make it a flexible upgrade between a turntable and a line-level amplifier or powered speakers. Why it stands out MM and MC cartridge supportA front-panel cartridge selector and 38 / 48 / 56 / 66 dB gain settings accommodate a broad range of phono cartridges. Precision analog signal pathOPA1612 amplification, precision film components and gold-plated RCA connections are designed for accurate, low-noise vinyl playback. Simple system integrationDedicated RCA input, RCA output and grounding terminal provide a straightforward connection between a turntable and a line-level audio system. Low-noise, user-friendly analog designAn aluminum chassis, one-touch controls and dedicated grounding support make setup straightforward while helping preserve a clean phono signal.Best for Turntables with MM or MC cartridges Vinyl systems without a built-in phono stage Upgrading an entry-level integrated phono preamp Compact desktop or living-room analog systems Not ideal for Turntables that only provide USB audio Users needing Bluetooth or digital inputs Directly driving passive speakers or headphones EMiUZEK Buying Notes Box X5 is a phono preamplifier, not a speaker power amplifier. Connect its RCA output to a line-level AUX input, powered speakers or a separate amplifier; do not connect it to another PHONO input. Select MM/MC mode and gain according to the cartridge manufacturer's output specification. Frequently asked questions Does Box X5 support both MM and MC cartridges?Yes. It provides selectable MM/MC operation and four gain settings. Does it include Bluetooth, USB or optical input?No. Box X5 is an analog phono stage with RCA phono input and RCA line output. Can it power passive speakers?No. A separate power amplifier or powered speakers are required. Can it be connected to powered speakers?Yes, provided the speakers have a compatible analog line input and their own volume control. Should I connect the turntable ground wire?Yes, when the turntable provides one. Proper grounding helps reduce hum. Can it be used as a normal line-level preamplifier?No. Its gain and RIAA equalization are designed specifically for phono cartridges. HOW TO CONNECT Turntable to integrated amplifierSource icon: turntableSource: MM or MC turntableConnection: RCA phono input + groundOutput connection: RCA line outputTarget icon: amplifierOutput: AUX / line input on an integrated amplifierNote: Do not connect the Box X5 output to another PHONO input. Turntable to powered speakersSource icon: turntableSource: MM or MC turntableConnection: RCA phono input + groundOutput connection: RCA line outputTarget icon: speakersOutput: Powered speakers with analog input Turntable to headphone systemSource icon: turntableSource: MM or MC turntableConnection: RCA phono input + groundOutput connection: RCA line outputTarget icon: headphonesOutput: Headphone amplifier connected to headphonesNote: Box X5 does not include a headphone amplifier; connect its line output to a separate headphone amplifier.Technical SpecificationsInputs and outputs Feature Specification MM / MC RCA phono input Included RCA line output Included Turntable grounding terminal Included Audio performance Feature Specification Gain 38 / 48 / 56 / 66 dB Frequency Response 20 Hz–20 kHz (±0.015 dB) THD ≤0.009% SNR ≥92 dB Operational Amplifier OPA1612 Physical and power Feature Specification Dimensions 4.1 × 6.5 × 1.4 in Power Supply 16 V / 1 A

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$109.90 - $111.77

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Fosi Audio Fosi Audio BT20A

Fosi Audio BT20A is a compact two-channel Class-D integrated amplifier for passive speakers, with Bluetooth and RCA inputs.It combines straightforward wireless playback, bass and treble adjustment, and up to 100 W per channel maximum output in a small desktop-friendly chassis. Why it stands outCompact passive-speaker amplifierProvides stereo speaker amplification without the size and complexity of a full-size receiver.Bluetooth and wired playbackSwitch between Bluetooth 5.0 streaming and an analog RCA source.Front-panel tone controlIndependent bass and treble knobs make quick system tuning simple. Simple everyday operationA compact front panel keeps power, volume, bass and treble adjustment immediately accessible without menus or an app.Best for Desktop passive-speaker systems Bookshelf speakers in small and medium rooms Simple Bluetooth stereo systems TVs or streamers with analog line output Not ideal for Systems requiring HDMI ARC, optical or USB input Users needing a subwoofer output Headphone listening EMiUZEK Buying Notes BT20A powers passive speakers; it is not intended as an input for powered speakers. The quoted 100 W × 2 is the manufacturer's maximum specification and depends on load and power supply. It has no phono stage, so most turntables require a phono preamplifier or line-level output. Frequently asked questionsCan it drive passive speakers directly?Yes. It supports 2–8 Ω passive speakers through the rear binding posts.Can it connect to active speakers?No dedicated pre-output is provided. Use BT20A to power passive speakers.Does it have a subwoofer output?No.Can I connect a turntable?Only when the turntable has a built-in phono stage or an external phono preamplifier is used.Does it support aptX?The official specification lists Bluetooth 5.0 but does not specify aptX support.Can I connect a TV?Yes, when the TV provides compatible analog audio output; there is no optical or HDMI input. HOW TO CONNECTBluetooth speaker systemSource icon: phoneSource: Phone / tabletConnection: Bluetooth 5.0Output connection: Speaker terminalsTarget icon: speakersOutput: Passive speakersWired stereo systemSource icon: streamerSource: Streamer / DAC / TV analog outputConnection: RCAOutput connection: Speaker terminalsTarget icon: speakersOutput: Passive speakers Turntable stereo systemSource icon: turntableSource: Turntable with built-in phono stage or external phono preamplifierConnection: RCA line inputOutput connection: Speaker terminalsTarget icon: speakersOutput: Passive speakersNote: Do not connect a phono-level turntable directly unless a compatible phono preamplifier is used.Technical SpecificationsInputs Feature Specification Bluetooth 5.0 Included RCA line input Included Outputs Feature Specification Stereo speaker binding posts Included Amplification Feature Specification Amplifier Architecture Class D Amplifier Chipset Dual TI TPA3116D2 Maximum Output Power 100 W × 2 Speaker Impedance 2–8 Ω Frequency Response 20 Hz–20 kHz (±1 dB) SNR ≥98 dB THD ≤0.5% Connectivity and power Feature Specification Bluetooth Range up to approximately 15 m / 50 ft without obstacles DC Input Range 12–24 V Supplied Power Adapter 24 V / 4.5 A Additional Product ContentComparison: BT20A or BT20A Pro? Feature BT20A BT20A Pro Amplifier chip Dual TPA3116D2 TPA3255 Maximum output 100 W × 2 300 W × 2 at 4 Ω Pre-out No 3.5 mm variable pre-out Best use Simple compact stereo Higher-output expandable stereo

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$78.08 - $79.90

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Fosi Audio Fosi Audio BT20A Pro

Fosi Audio BT20A Pro is a compact Bluetooth stereo integrated amplifier built around the TI TPA3255 for passive speakers.It adds RCA input, a variable 3.5 mm pre-out, bass and treble controls, replaceable op-amps and multiple power-supply options for a flexible desktop or room stereo system. Why it stands outTPA3255 stereo amplificationDelivers high-efficiency Class-D power with low specified distortion in a compact chassis.Variable pre-out expansionThe 3.5 mm pre-out can feed compatible powered speakers, a powered subwoofer or another amplifier.Replaceable op-ampsSocketed NE5532 op-amps allow experienced users to tailor the analog stage with compatible DIP8 replacements.Flexible power configurationsAvailable power-supply choices let buyers balance system output, size and cost. Best for Desktop and bookshelf passive-speaker systems Compact stereo systems with a powered subwoofer Bluetooth and RCA source switching Users interested in compatible op-amp rolling Not ideal for Systems requiring HDMI ARC, optical or USB input Users needing a headphone output Turntables without a phono preamplifier EMiUZEK Buying Notes Maximum power depends on the selected supply and speaker load; choose the power-supply variant appropriate for the system. The 3.5 mm connector is a pre-out, not a headphone jack. Bluetooth takes input priority; disconnect Bluetooth when using RCA if the wired source is not heard. Frequently asked questionsCan it power passive speakers?Yes. It supports 2–8 Ω passive speakers.Can it connect to a powered subwoofer?Yes, through the variable 3.5 mm pre-out using the appropriate cable.Is the pre-out a headphone output?No.Can I connect a turntable?Yes only through a turntable with line output or an external phono stage.Does it support aptX?No. The official documentation specifies SBC/AAC and states that aptX variants are not supported.Can RCA and Bluetooth play simultaneously?No. Only one input mode is used at a time. HOW TO CONNECTPassive speaker systemSource icon: streamerSource: Streamer / DAC / phoneConnection: RCA or BluetoothOutput connection: Speaker terminalsTarget icon: speakersOutput: Passive speakers2.1 stereo systemSource icon: streamerSource: Streamer / DACConnection: RCAOutput connection: Speaker terminals + 3.5 mm pre-outTarget icon: speakersOutput: Passive speakers + powered subwoofer Pre-out expansion systemSource icon: streamerSource: Streamer / DAC / phoneConnection: RCA or BluetoothOutput connection: 3.5 mm variable pre-outTarget icon: speakersOutput: Powered speakers, powered subwoofer or downstream amplifierNote: Confirm input compatibility and begin with the volume set low.Technical SpecificationsInputs Feature Specification Bluetooth 5.0 Included RCA line input Included Outputs Feature Specification Stereo speaker binding posts Included 3.5 mm variable pre-out Included Amplification Feature Specification Amplifier Chip TI TPA3255 Maximum Output Power 300 W × 2 at 4 Ω Speaker Impedance 2–8 Ω THD ≤0.005% SNR ≥108 dB Frequency Response 20 Hz–20 kHz (±1.2 dB) Socketed Op-Amps 2 × NE5532 Connectivity and power Feature Specification Bluetooth Codecs SBC / AAC Bluetooth Range up to 50 ft without obstacles DC Input Range 24–48 V Power Supply Options 32 V / 5 A or 48 V / 5 A, depending on variant Dimensions approximately 5 × 5 × 1 in Additional Product ContentComparison: BT20A or BT20A Pro? Feature BT20A BT20A Pro Amplifier chip Dual TPA3116D2 TPA3255 Maximum output 100 W × 2 300 W × 2 at 4 Ω Pre-out No 3.5 mm variable pre-out Best use Simple compact stereo Higher-output expandable stereo

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$89.25 - $119.90

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Fosi Audio Fosi Audio BT30D

Fosi Audio BT30D is a compact 2.1-channel Bluetooth integrated amplifier for two passive speakers and a passive or powered subwoofer.Dedicated subwoofer level and crossover controls make it a straightforward way to build an adjustable small-room, desktop or TV audio system. Why it stands outTrue 2.1-channel speaker controlSeparate stereo and subwoofer amplification supports passive speakers plus a passive subwoofer from one compact unit.Passive and powered subwoofer flexibilitySpeaker-level subwoofer output and a line-level subwoofer connection support different bass-system configurations.Dedicated bass integrationSubwoofer volume and cutoff adjustment help blend low frequencies with the main speakers. Compact analog controlMaster volume, bass, treble, subwoofer level and crossover adjustment are available directly from the front panel.Best for Compact 2.1 passive-speaker systems Desktop and small-room audio Adding an adjustable subwoofer to bookshelf speakers Bluetooth or RCA playback Not ideal for Systems requiring HDMI ARC or digital audio inputs Users needing a headphone output Large high-output home-theater systems EMiUZEK Buying Notes The main left/right outputs are for passive speakers. Use the dedicated speaker output for a passive subwoofer or the line-level output for a powered subwoofer. It has no phono stage; a turntable requires line output or an external phono preamplifier. Frequently asked questionsCan it power a passive subwoofer?Yes, through the dedicated subwoofer speaker output.Can it connect to a powered subwoofer?Yes, through its line-level subwoofer output.Can it be used without a subwoofer?Yes, it can operate as a 2.0-channel amplifier for passive speakers.Can it connect to a TV?Yes when the TV provides compatible analog audio output; it has no HDMI or optical input.Can it power active speakers?The main speaker outputs are amplified for passive speakers. A compatible line-level output should be used for powered equipment.Does it include Wi-Fi streaming?No. Wireless playback is through Bluetooth. HOW TO CONNECTPassive 2.1 systemSource icon: phoneSource: Phone / streamerConnection: Bluetooth or RCAOutput connection: L/R speaker terminals + passive subwoofer terminalsTarget icon: speakersOutput: Two passive speakers + passive subwooferPowered subwoofer systemSource icon: TVSource: TV analog output / DACConnection: RCAOutput connection: L/R speaker terminals + line-level sub outputTarget icon: speakersOutput: Passive speakers + powered subwoofer Passive 2.0 stereo systemSource icon: streamerSource: Streamer / DAC / phoneConnection: RCA or BluetoothOutput connection: Left and right speaker terminalsTarget icon: speakersOutput: Two passive speakersNote: A subwoofer is optional; the BT30D can operate as a conventional stereo amplifier.Technical SpecificationsInputs Feature Specification Bluetooth 5.0 Included RCA line input Included Outputs Feature Specification Stereo passive-speaker output Included Passive-subwoofer speaker output Included Line-level output for powered subwoofer Included Amplification Feature Specification Amplifier Chipset 2 × TI TPA3116D2 Maximum Main Output 50 W × 2 Maximum Subwoofer Output 100 W Speaker Impedance 2–8 Ω Subwoofer Cutoff Adjustment 20–200 Hz Connectivity and physical Feature Specification Bluetooth Range up to 15 m / 49 ft without obstacles Dimensions 118 × 132 × 35 mm Supplied Power Adapter 24 V / 4.5 A Additional Product ContentComparison: BT30D or BT30D Pro? Feature BT30D BT30D Pro Amplifier architecture 2 × TPA3116D2 TPA3255 Maximum output 50 W × 2 + 100 W 165 W × 2 + 350 W at 4 Ω DC input range Supplied 24 V / 4.5 A 12–36 V Best use Compact moderate-output 2.1 Higher-output 2.1 systems

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$79.90 - $98.17

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Fosi Audio Fosi Audio BT30D Pro

Fosi Audio BT30D Pro is a TPA3255-based 2.1-channel Bluetooth integrated amplifier for passive stereo speakers and passive or powered subwoofers.High-output Class-D amplification, separate bass controls and flexible subwoofer connections make it a compact control center for a powerful 2.1 system. Why it stands outHigh-output 2.1 amplificationDedicated stereo and subwoofer channels provide up to 165 W × 2 plus 350 W maximum at 4 Ω.Flexible subwoofer supportConnect a passive subwoofer from the amplified output or powered equipment from the 3.5 mm full-range line output.Independent system tuningMaster volume, bass, treble, subwoofer volume and subwoofer frequency controls support practical room integration.Bluetooth and RCA inputsWorks with wireless mobile sources or conventional analog line-level equipment. Best for Higher-output compact 2.1 systems Passive bookshelf or floor-standing speakers Passive or powered subwoofer integration Desktop, living-room and small TV systems with analog audio Not ideal for Systems requiring HDMI ARC, optical or USB inputs Users needing a headphone output Turntables without a phono preamplifier EMiUZEK Buying Notes The advertised 165 W × 2 + 350 W figures are maximum ratings at 4 Ω and depend on the power supply and load. The 3.5 mm output is full-range; powered subwoofers should use their own crossover where required. Bluetooth has priority over RCA, so disconnect Bluetooth to return to the wired input. Frequently asked questionsCan it power passive speakers and a passive subwoofer?Yes. It provides amplified outputs for both.Can it connect to a powered subwoofer?Yes, using the 3.5 mm full-range output and the powered subwoofer's compatible input.Can it operate as a 2.0 amplifier?Yes. A subwoofer is optional.Does it support aptX?No. The official instructions state that aptX, aptX HD and aptX Low Latency are not supported.Can it connect directly to a turntable?Only if the turntable provides line-level output; otherwise add a phono preamplifier.Can it connect to a TV?Yes when the TV has compatible analog output. It does not have HDMI ARC or optical input. HOW TO CONNECTHigh-output passive 2.1 systemSource icon: streamerSource: Streamer / DAC / phoneConnection: RCA or BluetoothOutput connection: Stereo speaker terminals + passive subwoofer terminalsTarget icon: speakersOutput: Passive speakers + passive subwooferPowered subwoofer systemSource icon: TVSource: TV analog output / DACConnection: RCAOutput connection: Stereo speaker terminals + 3.5 mm full-range outputTarget icon: speakersOutput: Passive speakers + powered subwoofer Passive 2.0 stereo systemSource icon: streamerSource: Streamer / DAC / phoneConnection: RCA or BluetoothOutput connection: Stereo speaker terminalsTarget icon: speakersOutput: Two passive speakersNote: A subwoofer is optional; leave the subwoofer outputs unused for a 2.0 system.Technical SpecificationsInputs Feature Specification Bluetooth 5.0 Included RCA line input Included Outputs Feature Specification Stereo passive-speaker output Included Passive-subwoofer speaker output Included 3.5 mm full-range line output Included Amplification Feature Specification Amplifier Chip TI TPA3255 Maximum Output 165 W × 2 + 350 W at 4 Ω Speaker Impedance 2–8 Ω Frequency Response 20 Hz–20 kHz (±1 dB) THD ≤0.04% SNR ≥108 dB Input Sensitivity 700 mV Passive Subwoofer Frequency Adjustment up to 300 Hz Connectivity and power Feature Specification Bluetooth Range up to 50 ft without obstacles DC Input Range 12–36 V Power Adapter dependent on selected variant Additional Product ContentComparison: BT30D or BT30D Pro? Feature BT30D BT30D Pro Amplifier architecture 2 × TPA3116D2 TPA3255 Maximum output 50 W × 2 + 100 W 165 W × 2 + 350 W at 4 Ω DC input range Supplied 24 V / 4.5 A 12–36 V Best use Compact moderate-output 2.1 Higher-output 2.1 systems

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$109.90 - $133.19

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Fosi Audio Fosi Audio DS1

Fosi Audio DS1 is a portable USB DAC and headphone amplifier for phones, tablets and computers.An ESS ES9038Q2M DAC, 3.5mm single-ended and 4.4mm balanced outputs, and high-resolution decoding provide a compact upgrade for wired headphones.Why it stands outESS ES9038Q2M conversionA proven ESS DAC architecture supports detailed portable playback.Dual headphone outputsConnect conventional 3.5mm headphones or compatible 4.4mm balanced headphones.High-resolution USB audioSupports PCM up to 32-bit/768kHz and native DSD512.Portable source-powered designRuns from the connected USB device without a separate battery or charger.Best for Wired headphone listening from USB-C phones Laptop and desktop USB audio Portable Hi-Res music systems Headphones requiring 3.5mm or 4.4mm output Not ideal for Wireless Bluetooth listening Headsets requiring microphone or inline-control support Driving passive speakers EMiUZEK Buying Notes DS1 has no battery and draws power from the connected source device. Use a compatible OTG adapter or cable for devices without USB-C; Lightning accessories may be required separately. Do not use a 3.5mm-to-4.4mm adapter with the balanced output. Frequently asked questionsDoes DS1 support both 3.5mm and 4.4mm headphones?Yes, it provides separate 3.5mm single-ended and 4.4mm balanced outputs.Does it include Bluetooth?No. DS1 is a wired USB DAC/headphone amplifier.Does it need charging?No. It is powered by the connected USB source.Can it work with Windows and Mac?Yes. It supports Windows and macOS, subject to the source device and playback software.Can it answer calls through a headset microphone?No. It is intended for audio playback and does not provide headset microphone control.Is warmth during use normal?Some warmth is normal for a compact high-output USB DAC.HOW TO CONNECTUSB-C phone listeningSource icon: phoneSource: USB-C phone / tabletConnection: USB-C audioOutput connection: 3.5mm headphone outputTarget icon: headphonesOutput: Wired headphonesBalanced portable listeningSource icon: phoneSource: USB-C phone / playerConnection: USB-C audioOutput connection: 4.4mm balanced outputTarget icon: headphonesOutput: Compatible balanced headphonesComputer audioSource icon: computerSource: Windows PC / MacConnection: USB audioOutput connection: 3.5mm or 4.4mm outputTarget icon: headphonesOutput: Wired headphonesTechnical SpecificationsAudio architecture Feature Specification Product type Portable USB DAC and headphone amplifier DAC chipset ESS ES9038Q2M Maximum PCM 32-bit / 768kHz DSD DSD64 / 128 / 256 / 512 Outputs and performance Feature Specification Headphone outputs 3.5mm single-ended; 4.4mm balanced Output power 120mW @ 32Ω single-ended; 220mW @ 32Ω balanced Recommended impedance 16–300Ω SNR 120dB Weight 38g Additional Product ContentComparison: Which Fosi Audio model is right for you? Model DS1 DS2 2024 DS3 Primary use Portable Hi-Res music Portable Hi-Res music Music and gaming spatial audio DAC / processing ESS ES9038Q2M Dual CS43131 Hardware 7.1 processing Maximum PCM 32-bit / 768kHz 32-bit / 384kHz 32-bit / 768kHz Maximum DSD DSD512 DSD256 DSD512 Maximum stated output 220mW @ 32Ω balanced 510mW @ 32Ω balanced (manual) 220mW @ 32Ω Best use Compact ESS dongle Higher-power balanced portable setup Gaming effects and spatial audio

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$78.84

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Fosi Audio Fosi Audio DS2

Fosi Audio DS2 (2024) is a portable USB DAC and headphone amplifier for mobile devices and computers.Dual CS43131 DACs, independent volume control and 3.5mm plus 4.4mm outputs deliver clean, powerful wired headphone playback in a compact dongle.Why it stands outDual CS43131 DAC architectureThe current 2024 version uses two Cirrus Logic DAC chips for low-noise conversion.Strong balanced outputThe 4.4mm output provides substantially more power than the single-ended connection.Independent hardware volumeDedicated buttons allow finer adjustment without relying only on the source device.High-resolution playbackSupports PCM up to 32-bit/384kHz and DSD256.Best for USB-C phone and tablet listening Windows and Mac headphone systems Sensitive IEMs and full-size wired headphones Users needing 3.5mm and 4.4mm outputs Not ideal for Bluetooth or wireless headphones Headsets requiring microphone support Users expecting an internal battery EMiUZEK Buying Notes This listing is for the DS2 2024 version with dual CS43131 DACs; older DS2 specifications do not apply. DS2 draws power from the connected source and can feel warm during normal operation. Lightning devices require a compatible Lightning-to-USB-C OTG cable that may be sold separately. Frequently asked questionsWhich DAC chips are used?The current DS2 2024 uses dual CS43131 DACs.What is the maximum resolution?PCM up to 32-bit/384kHz and DSD256.Does it have a battery?No. It is powered by the connected USB device.Can it drive 4.4mm balanced headphones?Yes, with compatible balanced-wired headphones.Can I use a 3.5mm-to-4.4mm adapter?No. Use headphones terminated correctly for the selected output.Why does it feel warm?A moderate temperature rise is normal during high-resolution or higher-output operation.HOW TO CONNECTUSB-C phone listeningSource icon: phoneSource: USB-C phone / tabletConnection: USB-C audioOutput connection: 3.5mm outputTarget icon: headphonesOutput: Wired headphones or IEMsBalanced portable listeningSource icon: phoneSource: USB-C phone / playerConnection: USB-C audioOutput connection: 4.4mm balanced outputTarget icon: headphonesOutput: Balanced headphonesComputer headphone systemSource icon: computerSource: Windows PC / MacConnection: USB audioOutput connection: 3.5mm or 4.4mm outputTarget icon: headphonesOutput: Wired headphonesTechnical SpecificationsAudio architecture Feature Specification Product type Portable USB DAC and headphone amplifier DAC chipset Dual CS43131 Maximum PCM 32-bit / 384kHz DSD DSD64 / 128 / 256 Outputs and performance Feature Specification Headphone outputs 3.5mm single-ended; 4.4mm balanced Output power 128mW @ 32Ω single-ended; 170mW @ 32Ω balanced Recommended impedance 16–300Ω SNR ≥130dB THD+N <0.0002% Additional Product ContentComparison: Which Fosi Audio model is right for you? Model DS1 DS2 2024 DS3 Primary use Portable Hi-Res music Portable Hi-Res music Music and gaming spatial audio DAC / processing ESS ES9038Q2M Dual CS43131 Hardware 7.1 processing Maximum PCM 32-bit / 768kHz 32-bit / 384kHz 32-bit / 768kHz Maximum DSD DSD512 DSD256 DSD512 Maximum stated output 220mW @ 32Ω balanced 510mW @ 32Ω balanced (manual) 220mW @ 32Ω Best use Compact ESS dongle Higher-power balanced portable setup Gaming effects and spatial audio

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$50.29

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Fosi Audio Fosi Audio DS3

Fosi Audio DS3 is a portable USB DAC and headphone amplifier designed for music, gaming and multichannel spatial-audio playback.Hardware 7.1 processing, PCM 768kHz/DSD512 decoding and a 220mW output combine immersive gaming modes with high-resolution wired headphone listening.Why it stands outHardware-level 7.1 spatial audioProcesses compatible multichannel game audio into an expansive headphone presentation without PC software.Dedicated gaming sound modesSwitch between standard, FPS and 7.1 spatial effects in UAC 1.0 mode.High-resolution music playbackSupports PCM up to 32-bit/768kHz and native DSD512.Compact high-output designProvides up to 220mW at 32Ω while weighing only 16g.Best for PC and console gaming with wired headphones Portable high-resolution music playback Users wanting selectable spatial-audio effects 16–300Ω wired headphones Not ideal for Bluetooth or wireless playback Headsets requiring microphone passthrough Users wanting speaker amplification EMiUZEK Buying Notes 7.1 spatial processing depends on the source game or device providing compatible multichannel audio. Gaming effects are selected in UAC 1.0 mode; music filters are handled in UAC 2.0 mode. DS3 has no built-in battery and draws power from the connected source. Frequently asked questionsDoes DS3 require a driver?No PC software or driver is required for its core operation.How is 7.1 mode selected?In UAC 1.0 mode, hold both volume buttons to cycle through the available sound effects.Can it play ordinary stereo music?Yes. Spatial effects are optional and standard stereo playback is supported.What is the maximum output power?The official specification lists 220mW at 32Ω.Does it support DSD?Yes, up to native DSD512.Can gain be changed?Yes. Press both volume buttons together to switch between low and high gain.HOW TO CONNECTPC gamingSource icon: computerSource: Gaming PCConnection: USB audio / compatible multichannel outputOutput connection: Headphone outputTarget icon: headphonesOutput: Wired gaming headphonesConsole gamingSource icon: deviceSource: Compatible consoleConnection: USB audio in UAC 1.0 modeOutput connection: Headphone outputTarget icon: headphonesOutput: Wired headphonesPortable musicSource icon: phoneSource: USB-C phone / tabletConnection: USB-C audioOutput connection: Headphone outputTarget icon: headphonesOutput: Wired headphones or IEMsTechnical SpecificationsAudio and processing Feature Specification Product type Portable USB DAC and headphone amplifier Maximum PCM 32-bit / 768kHz DSD Native DSD512 Spatial processing Hardware 7.1; FPS effect; standard mode Output and physical Feature Specification Maximum output 220mW @ 32Ω Recommended impedance 16–300Ω Dimensions 55 × 20 × 11mm Weight 16g Additional Product ContentComparison: Which Fosi Audio model is right for you? Model DS1 DS2 2024 DS3 Primary use Portable Hi-Res music Portable Hi-Res music Music and gaming spatial audio DAC / processing ESS ES9038Q2M Dual CS43131 Hardware 7.1 processing Maximum PCM 32-bit / 768kHz 32-bit / 384kHz 32-bit / 768kHz Maximum DSD DSD512 DSD256 DSD512 Maximum stated output 220mW @ 32Ω balanced 510mW @ 32Ω balanced (manual) 220mW @ 32Ω Best use Compact ESS dongle Higher-power balanced portable setup Gaming effects and spatial audio

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$80.69 - $239.00

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Fosi Audio Fosi Audio GR40

Fosi Audio GR40 is a desktop tube DAC, headphone amplifier and preamplifier for digital and Bluetooth sources.USB, optical, coaxial and Bluetooth inputs, replaceable 5654W tubes, tone controls and RCA pre-output make it a flexible centerpiece for headphones or powered audio systems.Why it stands outMulti-input desktop DACAccepts USB, optical, coaxial and Bluetooth sources in one compact component.Tube analog stageTwo replaceable 5654W tubes add tube-based amplification and visual character.Headphone and preamp operationUse the front 3.5mm headphone output or feed powered speakers and power amplifiers from RCA.High-resolution and codec supportSupports PCM 32-bit/384kHz, DSD256 and Bluetooth codecs including aptX HD and aptX LL.Best for Desktop headphone listening TVs with optical audio output Computers using USB audio Powered speakers or separate power amplifiers Not ideal for Directly driving passive speakers Balanced headphone or XLR systems Turntables without a phono preamplifier EMiUZEK Buying Notes GR40 is not a speaker power amplifier; passive speakers require a separate power amplifier. The RCA output is muted when headphones are connected. Allow the tubes to cool before removal and only use officially compatible replacements. Frequently asked questionsCan GR40 power passive speakers?No. Connect its RCA output to a separate power amplifier or use powered speakers.Can it connect to a TV?Yes, through a compatible optical or coaxial digital output.Does it include a phono input?No. A turntable requires a built-in or external phono preamplifier.Which headphones are supported?The official range is 32–300Ω through the 3.5mm output.Can the tubes be replaced?Yes, but only with compatible tube types and after the unit is powered off and cool.What Bluetooth codecs are supported?SBC, AAC, aptX, aptX HD and aptX LL are listed in the manual.HOW TO CONNECTComputer headphone systemSource icon: computerSource: Windows PC / MacConnection: USB audioOutput connection: 3.5mm headphone outputTarget icon: headphonesOutput: Wired headphonesTV headphone systemSource icon: tvSource: TVConnection: Optical or coaxial PCMOutput connection: 3.5mm headphone outputTarget icon: headphonesOutput: Wired headphonesPowered speaker or amplifier systemSource icon: streamerSource: Digital source / Bluetooth deviceConnection: USB, optical, coaxial or BluetoothOutput connection: RCA pre-outputTarget icon: speakersOutput: Powered speakers or separate power amplifierTechnical SpecificationsInputs and outputs Feature Specification Inputs USB; optical; coaxial; Bluetooth Outputs RCA pre-output; 3.5mm headphone output Channels 2.0 Tube complement 2 × 5654W Digital and headphone performance Feature Specification Maximum resolution PCM 32-bit / 384kHz; DSD256 Bluetooth 5.1; SBC, AAC, aptX, aptX HD, aptX LL Headphone impedance 32–300Ω Output power 300mW @ 16Ω; 250mW @ 32Ω; 50mW @ 250Ω; 40mW @ 300Ω SNR ≥103dB Power input DC 12V Additional Product ContentComparison: Which Fosi Audio model is right for you? Model GR40 GR70 K7 Product position Tube DAC / headphone amp / preamp Analog tube headphone amp / preamp Balanced digital DAC / headphone amp Digital inputs USB, optical, coaxial, Bluetooth None USB, optical, coaxial, Bluetooth Headphone outputs 3.5mm 3.5mm and 6.35mm 3.5mm and 4.4mm balanced Speaker-system output RCA pre-out RCA pre-out RCA line output Best use Digital sources with tube stage Analog tube headphone system High-output HiFi and gaming

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$119.90 - $137.42

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Fosi Audio Fosi Audio GR70

Fosi Audio GR70 is a Class-A tube headphone amplifier and RCA preamplifier for analog desktop and HiFi systems.A two-stage four-tube circuit, dual headphone outputs, selectable impedance modes and tone controls provide warm analog listening for headphones or downstream amplifiers.Why it stands outPure tube amplificationTwo 5654W and two 6Ж4/6Ж8 tubes form a two-stage analog amplification path.Headphone and preamp functionsUse 3.5mm or 6.35mm headphones, or connect the RCA output to powered speakers or a power amplifier.Selectable impedance modesLow and high settings support headphones from 16Ω to 300Ω.Direct analog tone controlFront-panel bass, treble and volume adjustment simplify sound tuning without software.Best for Analog headphone listening High-impedance and conventional full-size headphones Adding tube character before a power amplifier Powered speaker systems with RCA input Not ideal for USB, optical, coaxial or Bluetooth sources without a separate DAC Directly driving passive speakers Balanced headphone or XLR systems EMiUZEK Buying Notes GR70 is an analog headphone amplifier/preamp; digital sources require a DAC with RCA output. Its RCA output cannot power passive speakers directly; use powered speakers or a power amplifier. Use only officially confirmed compatible tubes and allow installed tubes to cool before handling. Frequently asked questionsDoes GR70 include a DAC?No. It accepts analog RCA input.Can it power passive speakers?No. A separate power amplifier is required.Which headphones are supported?The official specification covers 16–300Ω using selectable low/high impedance modes.Does it have balanced output?No. Headphone outputs are 3.5mm and 6.35mm, with RCA pre-output.Can it be used as a preamplifier?Yes, through the rear RCA output.Which tubes are supplied?The official package lists two 5654 tubes and two 6Ж4/6Ж8 tubes.HOW TO CONNECTAnalog headphone systemSource icon: streamerSource: DAC / streamer with RCA outputConnection: RCA line inputOutput connection: 3.5mm or 6.35mm outputTarget icon: headphonesOutput: Wired headphonesPowered speaker systemSource icon: streamerSource: Analog source / DACConnection: RCA line inputOutput connection: RCA pre-outputTarget icon: speakersOutput: Powered speakersSeparate power amplifier systemSource icon: streamerSource: Analog source / DACConnection: RCA line inputOutput connection: RCA pre-outputTarget icon: amplifierOutput: Power amplifier driving passive speakersTechnical SpecificationsAnalog connections Feature Specification Input RCA line input Outputs RCA pre-output; 3.5mm and 6.35mm headphone outputs Amplification Class-A tube Tube complement 2 × 5654W; 2 × 6Ж4/6Ж8 Headphone and power Feature Specification Rated output 90mW @ 32Ω Maximum output 300mW @ 32Ω Headphone impedance Low: 16–120Ω; High: 120–300Ω RCA output level 1.2V SNR ≥97dB Power input DC 12V / 3A Additional Product ContentComparison: Which Fosi Audio model is right for you? Model GR40 GR70 K7 Product position Tube DAC / headphone amp / preamp Analog tube headphone amp / preamp Balanced digital DAC / headphone amp Digital inputs USB, optical, coaxial, Bluetooth None USB, optical, coaxial, Bluetooth Headphone outputs 3.5mm 3.5mm and 6.35mm 3.5mm and 4.4mm balanced Speaker-system output RCA pre-out RCA pre-out RCA line output Best use Digital sources with tube stage Analog tube headphone system High-output HiFi and gaming

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$181.70 - $233.99

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Fosi Audio Fosi Audio HT4S

Fosi Audio HT4S is a compact 4.1/5.0-channel integrated amplifier for multi-speaker, outdoor-audio and simulator systems. Bluetooth, optical and 3.5mm inputs, five amplified channels and a switchable sub/center channel create a flexible multi-speaker system without a full-size AV receiver. Why it stands out Switchable 4.1 or 5.0 operation Configure four main speakers plus a subwoofer channel, or use five full-range speaker channels. Built-in multi-channel power Provides four 30W channels plus a 60W sub channel in 4.1 mode, or five 30W channels in 5.0 mode. Digital and wireless inputs Connect optical PCM, 3.5mm analog or Bluetooth sources. Remote and front-panel control Adjust source, volume, tone and operation without a separate controller. Best for Outdoor and patio multi-speaker systems Sim-racing bass-shaker installations Compact 4.1 or 5.0 speaker systems TV systems with optical PCM output Not ideal for Dolby or DTS surround decoding Systems requiring HDMI ARC Speakers below the specified 4Ω minimum EMiUZEK Buying Notes HT4S is a multi-channel amplifier, not an HDMI adapter or surround-sound decoder. Set the source to PCM stereo when using optical; encoded Dolby/DTS signals are not supported. The SUB/CEN output changes function with the selected mode, so confirm the switch setting before connecting speakers. Frequently asked questions Does HT4S have HDMI? No. Inputs are Bluetooth, optical and 3.5mm AUX. Does it decode Dolby or DTS? No. Use a compatible PCM signal. Can it run five passive speakers? Yes, in 5.0 mode with compatible 4–8Ω speakers. Can it power a passive subwoofer? Yes, in 4.1 mode through the dedicated amplified SUB/CEN channel. Does it have a line output? Yes, a 3.5mm pre-out is provided. Can it be used outdoors? It can power outdoor speakers, but the amplifier itself should remain protected indoors. HOW TO CONNECT Optical TV system Source icon: tvSource: TV / projectorConnection: Optical PCMOutput connection: Speaker terminalsTarget icon: speakersOutput: Four or five passive speakers Outdoor multi-speaker system Source icon: phoneSource: Phone / streamerConnection: Bluetooth or AUXOutput connection: Speaker terminalsTarget icon: speakersOutput: Outdoor passive speakers Sim-racing system Source icon: computerSource: PC / simulator audioConnection: Optical, AUX or BluetoothOutput connection: Speaker and SUB/CEN outputsTarget icon: speakersOutput: Speakers and compatible bass shaker / passive subwoofer Technical Specifications Connections Feature Specification Inputs Bluetooth; optical; 3.5mm AUX Outputs Five speaker channels; 3.5mm pre-out Speaker impedance 4–8Ω Amplification and physical Feature Specification 4.1 rated output 30W × 4 + 60W × 1 @ 4Ω 5.0 rated output 30W × 5 Maximum output 50W × 5 @ 4Ω SNR ≥88dB THD ≤0.03% AC input 110–240V Dimensions 6.1 × 7.2 × 2 in Additional Product Content Comparison: Which Fosi Audio model is right for you? Model HT4S BT30D BT30D Pro System type 4.1 / 5.0 multi-speaker 2.1 stereo Higher-output 2.1 stereo Digital input Optical None None Amplified outputs Up to five channels Stereo + passive subwoofer Stereo + passive subwoofer Maximum stated output 50W × 5 @ 4Ω 50W × 2 + 100W 165W × 2 + 350W @ 4Ω Best use Outdoor, sim racing, multi-speaker Compact moderate-output 2.1 Higher-output 2.1

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$140.39 - $156.47

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Fosi Audio Fosi Audio IM4

Fosi Audio IM4 is an open-back wired in-ear monitor built around a 10mm dual-magnet dynamic driver.Its lightweight CNC-aluminum shells, replaceable nozzles and multiple ear-tip tunings combine a spacious presentation with adjustable comfort and sound.Why it stands outOpen-back acoustic designReduces enclosed-ear pressure and creates a more spacious presentation than a sealed IEM.10mm dual-magnet driverAn N52 dual-magnet, dual-chamber dynamic driver delivers the full frequency range.Tunable fit and soundTwo nozzle materials and three ear-tip styles allow practical adjustment.Lightweight detachable constructionEach aluminum earpiece weighs about 7g and uses a replaceable 0.78mm 2-pin cable.Best for Home and office wired listening Listeners who prefer an open, spacious IEM Long listening sessions Users wanting replaceable cables and tuning accessories Not ideal for Maximum passive noise isolation Wireless Bluetooth listening without an adapter Very quiet public environments where sound leakage matters EMiUZEK Buying Notes IM4 is open-back, so it isolates less and can leak more sound than a sealed IEM. The standard package uses a 3.5mm cable; balanced cables and DS3 bundles depend on the selected variant. Choose ear tips for both seal and comfort, then compare nozzles at a safe volume. Frequently asked questionsIs IM4 open-back?Yes. It is designed for a more open presentation with reduced isolation.Does it include Bluetooth?No. It is a passive wired IEM.Can the cable be replaced?Yes, it uses a 0.78mm 2-pin detachable connection.Is a 4.4mm cable included?Only with the relevant option or bundle; check the selected variant.Can it be used with a phone?Yes, when the phone has a compatible output or USB DAC adapter.Does the DS3 always come in the box?No. DS3 is included only in specifically named combo variants.HOW TO CONNECTPhone listeningSource icon: phoneSource: Phone / tabletConnection: 3.5mm output or compatible USB DACOutput connection: 0.78mm 2-pin cableTarget icon: headphonesOutput: IM4 earphonesPortable DAC systemSource icon: phoneSource: USB-C phone / playerConnection: USB DAC to 3.5mm or optional 4.4mm cableOutput connection: Detachable cableTarget icon: headphonesOutput: IM4 earphonesDesktop listeningSource icon: computerSource: PC / desktop DACConnection: 3.5mm or compatible balanced headphone outputOutput connection: Detachable cableTarget icon: headphonesOutput: IM4 earphonesTechnical SpecificationsAcoustic design Feature Specification Driver 10mm N52 dual-magnet dual-cavity dynamic driver Diaphragm PU beryllium-coated Design Open-back in-ear monitor Impedance 21Ω Sensitivity 109dB Frequency response 20Hz–20kHz Construction and cable Feature Specification Shell 6063 CNC aluminum alloy Connector 0.78mm 2-pin Standard plug 3.5mm gold-plated Cable 4-core 392-strand 5N OFC silver-plated copper Weight 7g ±0.5g per earpiece; 38g ±1g with cable Additional Product ContentComparison: Which Fosi Audio model is right for you? Model IM4 DS3 + IM4 combo IM4 accessory option Product Open-back wired IEM IM4 with DS3 portable DAC Cable or DAC accessory Standard connection 3.5mm USB-C source through DS3 Depends on selected accessory Best use Direct wired listening Portable DAC and gaming system Upgrading cable or phone connection Important note Standard package only Only named combo variants include DS3 Accessory is not a complete IM4 package

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$29.00 - $239.00

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Fosi Audio Fosi Audio K5 Pro

Fosi Audio K5 Pro is a compact gaming DAC and headphone amplifier with USB, optical and coaxial digital inputs.A microphone input, RCA output, tone controls and strong 3.5mm headphone amplification provide one control point for PC, console and desktop audio.Why it stands outGaming microphone supportA dedicated 3.5mm microphone input supports compatible PC and console communication setups.Three digital source inputsSwitch between USB-C, optical and coaxial sources.Powerful headphone outputSupports 16–300Ω headphones with up to 500mW at 32Ω.Headphone and speaker integrationUse the 3.5mm headphone output or RCA output for powered speakers and amplifiers.Best for PC and console gaming Desktop headphones and powered speakers TVs with optical PCM output Users wanting physical bass and treble controls Not ideal for High-resolution playback above 24-bit/192kHz Balanced headphone connections Passive speakers without a power amplifier EMiUZEK Buying Notes The microphone function works in USB mode and is not available from optical or coaxial inputs. USB playback is limited to 24-bit/96kHz; optical and coaxial support up to 24-bit/192kHz. K5 Pro does not power passive speakers directly; connect RCA to powered speakers or an amplifier. Frequently asked questionsCan it be used with PS5?Yes, through a compatible USB connection and system audio settings.Does the microphone work with optical input?No. Microphone support is for USB mode.Can it drive 300Ω headphones?Yes, the official recommended range is 16–300Ω.Can it connect to powered speakers?Yes, through RCA output.Does it support balanced headphones?No. The headphone output is 3.5mm single-ended.Can it decode Dolby or DTS from a TV?Use PCM output; multichannel encoded formats are not supported.HOW TO CONNECTPC gamingSource icon: computerSource: PC / MacConnection: USB-C audio + microphoneOutput connection: 3.5mm headphone outputTarget icon: headphonesOutput: Gaming headset / headphonesConsole gamingSource icon: deviceSource: Compatible consoleConnection: USB audioOutput connection: 3.5mm headphone outputTarget icon: headphonesOutput: Gaming headset / headphonesTV and speaker systemSource icon: tvSource: TVConnection: Optical PCMOutput connection: RCA outputTarget icon: speakersOutput: Powered speakers or amplifierTechnical SpecificationsInputs and outputs Feature Specification Inputs USB-C; optical; coaxial; 3.5mm microphone Outputs 3.5mm headphone; RCA line output Recommended headphone impedance 16–300Ω Digital and headphone performance Feature Specification USB maximum 24-bit / 96kHz Optical/coaxial maximum 24-bit / 192kHz Output power 1000mW @ 16Ω; 500mW @ 32Ω; 300mW @ 64Ω; 150mW @ 128Ω; 80mW @ 300Ω SNR ≥110dB THD ≤0.003% Power input DC 5V via USB-C Additional Product ContentComparison: Which Fosi Audio model is right for you? Model K5 Pro Q4 K7 Primary use Gaming DAC with microphone Simple desktop DAC/headphone amp Premium HiFi and gaming DAC Inputs USB, optical, coaxial, microphone USB, optical, coaxial USB, optical, coaxial, Bluetooth, microphone Headphone output 3.5mm 3.5mm 3.5mm and 4.4mm balanced Maximum USB playback 24-bit / 96kHz 24-bit / 96kHz 32-bit / 384kHz; DSD256 Best use Budget gaming communication Basic music and TV upgrade High-output balanced desktop system

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$54.47 - $75.00

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Fosi Audio Fosi Audio K7

Fosi Audio K7 is a fully balanced desktop DAC and headphone amplifier designed for HiFi listening, gaming and communication.AK4493SEQ conversion, USB/optical/coaxial/Bluetooth inputs, microphone support and powerful 3.5mm and 4.4mm outputs make it a comprehensive desktop audio hub.Why it stands outFully balanced high-output designThe 4.4mm output provides at least 2.1W + 2.1W at 32Ω for compatible headphones.Audiophile digital architectureCombines an AK4493SEQ DAC, XMOS XU208 USB processor and TPA6120 headphone amplification.Gaming and microphone featuresA microphone input with noise reduction and physical EQ controls support gaming and online communication.Extensive source connectivityAccepts USB-C, optical, coaxial and Bluetooth aptX HD/LL sources.Best for Desktop HiFi headphone systems PC and console gaming TVs and projectors with digital output Powered speakers or amplifiers using RCA Not ideal for Directly driving passive speakers Portable battery-powered use Users requiring HDMI ARC EMiUZEK Buying Notes The 4.4mm output requires correctly wired balanced headphones; do not use an unsafe single-ended adapter. RCA is a line-level output for powered speakers or amplifiers, not passive speakers. Microphone compatibility and console operation depend on the selected input mode and system settings. Frequently asked questionsWhat is the maximum headphone output?The balanced output is rated at ≥2.1W + 2.1W at 32Ω; the 3.5mm output is ≥600mW + 600mW at 32Ω.Does K7 support Bluetooth?Yes, including aptX HD and aptX LL.Can it connect to a TV?Yes, through compatible optical or coaxial PCM output.Can it power passive speakers?No. Use its RCA output with powered speakers or a power amplifier.Does it support microphones?Yes, through the 3.5mm microphone input and compatible system setup.What is the maximum USB resolution?PCM up to 32-bit/384kHz and DSD256.HOW TO CONNECTPC gaming and communicationSource icon: computerSource: PC / MacConnection: USB-C audio + microphoneOutput connection: 3.5mm or 4.4mm headphone outputTarget icon: headphonesOutput: Gaming headset / headphonesTV headphone systemSource icon: tvSource: TV / projectorConnection: Optical or coaxial PCMOutput connection: Headphone outputTarget icon: headphonesOutput: Wired headphonesPowered speaker systemSource icon: streamerSource: PC / streamer / Bluetooth deviceConnection: USB, digital or BluetoothOutput connection: RCA line outputTarget icon: speakersOutput: Powered speakers or amplifierTechnical SpecificationsDigital architecture Feature Specification DAC AKM AK4493SEQ USB processor XMOS XU208 Headphone amplifier TPA6120 Maximum resolution PCM 32-bit / 384kHz; DSD256 Inputs USB-C; optical; coaxial; Bluetooth; 3.5mm microphone Outputs and performance Feature Specification Outputs 3.5mm single-ended; 4.4mm balanced; RCA 3.5mm rated output ≥600mW + 600mW @ 32Ω 4.4mm rated output ≥2.1W + 2.1W @ 32Ω SNR ≥121dB THD+N ≤0.0002% Power input DC 12V Additional Product ContentComparison: Which Fosi Audio model is right for you? Model K5 Pro Q4 K7 Primary use Gaming DAC with microphone Simple desktop DAC/headphone amp Premium HiFi and gaming DAC Inputs USB, optical, coaxial, microphone USB, optical, coaxial USB, optical, coaxial, Bluetooth, microphone Headphone output 3.5mm 3.5mm 3.5mm and 4.4mm balanced Maximum USB playback 24-bit / 96kHz 24-bit / 96kHz 32-bit / 384kHz; DSD256 Best use Budget gaming communication Basic music and TV upgrade High-output balanced desktop system

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$111.48 - $199.90

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