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

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The FiiO 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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