Information Density: FiiO (Guangzhou FiiO Electronics Technology Co., Ltd.) – Signal Evidence & AI Readability

Bluetooth Noise Cancelling Over-Ear Headphones

40mm dynamic driver | Sapphire-coated composite diaphragm -42dB hybrid active noise cancellation | ENC (Environmental Noise Cancellation) for calls | LDAC support | Supports wired mode
75-hour battery life | Foledable design | Supports app control

*Pictures are for reference only. The actual product may vary.

Compact size with 2×300W power output | Texas Instruments digital amplifier
Premium audiophile-grade components | Bluetooth/line in/coaxial/USB inputs
Speaker/subwoofer/pre-out outputs | Hardware bass and treble adjustment
Bluetooth 6.0 with LDAC support | RGB input and Bluetooth codec indicators
Metal + wood vintage design | 48V/5A power adapter included

* product map is for reference only, all in kind prevail.

Qualcomm Snapdragon 680 | Android 13, 8GB+128GB large storage and RAM
XMOS XU316 chip | 10-band PEQ, supports AUTO EQ
Fully differential 24Bit R2R resistor arrays | Multi-stage audio circuit with TI op-amps
1100mW+1100mW powerful output
M27-derived proprietary DAPS Digital Audio Purification System
5.5-inch 1080p HD display | 15.5 hours of long battery life

*Pictures are for reference only. The actual product may vary.

* Pictures are for reference only. The actual product may vary.

Round touchscreen | 2TB micro-SD card storage support
3.5+4.4 dual outputs | Dual DAC | Minimalist pure audio OS Bidirectional USB audio | WiFi connectivity
LDAC high-res Bluetooth | SPDIF output | OTA updates
Various sound presets including retro | 12 hours long battery life

FIIO Retro Bluetooth Mini Headphones

Retro wooden earcups | Portable Bluetooth connection
High-fidelity 40mm dynamic driver | Semi-open design
LDAC support | 30 hours battery life | Lightweight and portable 92g design Supports app control | Replaceable earpads

* Pictures are for reference only. The actual product may vary.

Low-noise regulated linear power supply

Audiophile-grade 75W toroidal transformer
12V/15V dual voltage support, 3A high current output
Fully discrete voltage regulator circuit + dual-MOSFET parallel current amplification output Relay-controlled transformer voltage switching ELNA/Rubycon/WIMA capacitors
Self-resetting fuse overcurrent protection | Precision potentiometer for voltage fine-tuning Minimalist Tech Family-Style Appearance

* Pictures are for reference only. The actual product may vary.

High-Resolution Bluetooth Audio Receiver

Flagship Bluetooth chip Qualcomm QCC5181, Bluetooth 6.0  Supports LDAC, aptX Lossless Bluetooth codecs
Fully differential true 24Bit R2R resistor arrays DAC
NOS/OS modes | Bluetooth/USB/optical/coaxial decoding
2 RCA + 1 XLR set of line outputs | Optical + coaxial digital outputs Global 10-band PEQ + AUTO EQ | AC/DC dual power supplies Included infrared remote control

* Pictures are for reference only. The actual product may vary.

Fully automatic operation | 7 customizable ambient lighting modes Interchangeable cartridge and adjustable counterweight
Classic analog audio design | Wireless Bluetooth connectivity
LO/PHONO outputs

*Pictures are for reference only. The actual product may vary.

Fully automatic turntable

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[IMG: hi-res]

Open-Backed Planar Headphones Large

FT7

TT13

Fully Automatic Vinyl Turntable

M21

Portable Hi-Res Lossless Music Player

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Qualcomm CSR8645 Bluetooth chip｜
aptX support｜Independent local volume control
Built-in microphone｜NFC support

μBTR
Bluetooth Receiver

[IMG: 蓝牙]

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Desktop DAC and Headphone Amplifier K17

Portable Stereo Radio RR11

Planar In-Ear Monitors FP3

Desktop High-Res Audio Streamer S15

Portable High-Res Lossless Music Player JM21

Open-Back Planar Headphones FT1PRO

[IMG: Fully Automatic Vinyl Turntable]

Fully Automatic Vinyl Turntable TT13

Portable Bluetooth DAC and Headphone Amplifier BTR17

Portable Stereo CD Player DM13

New TRUST Cables are Available!

2026-05-26

The new firmware V13.2 for BTR13 is now available!

2026-05-22

NEST EDC Portable Storage Bag is Available!

2026-05-21

NEST Cans Mini Headphone Storage Case is Available!

2026-05-21

NEST Pod—JM21 Protective Case is available!

2026-05-21

SNOWSKY ECHO NANO is Now Officially Released!

2026-05-21

The new firmware V3.5.0 for SNOWSKY ECHO MINI is now available!

2026-05-15

High-Resolution Audio Power Amplifier LEVEL 1 is Officially Released!

2026-05-13

On-Ear Bluetooth ANC Headphones

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K17

k19

K15

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Discrete class AB transistor current amplification headphoneamplifier

An important part of the K17 is a carefully crafted fully discrete amplifier circuit for headphones. This discrete circuit is of an OP+ transistor current amplification design, equipped with the classic pair of ON Semiconductor MJE243/253 transistors. It is capable of producing high current with low output impedance. The result is up to 4000mW+4000mW output power in balanced mode, nearly double that of the K9 Pro ESS. This allows it to easily drive various kinds of headphones and IEMs and to produce smooth, pleasant, and natural sound.

Powerful output

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k17 parameters

Exploring new frontiers Symphony of retro elegance and modern technology

This is the next generation desktop decoding headphone amplifier, aiming to be a unique and excellent performer. It is a symphony of retro elegance and cutting-edge technology, featuring a unique design and rich functionality all wrapped in a powerful package. The FIIO K17 is not only the upgraded successor to the K9 Pro, it is also an exploration of new possibilities for a high-end desktop DAC and headphone amplifier.

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A mixing console for desktop HiFi

Specialty chips for specialty uses Exceptionally strong

The K17 features an M21586Q DSP chip which is capable of double- precision 64-bit floating-point calculations, and runs at a high 360MHz clock frequency. This chip is complemented by a high-performance ES9821Q ADC as well as a specially customized ultra-low phase noise femtosecond crystal oscillator. These three components allow the user, in all modes, to utilize the 31-band high-precision lossless PEQ. The PEQ is designed to ensure the audio signal is still of high fidelity even after being processed. The chip also allows for robust output protection functionality, ensuring that headphones and other connected audio equipment are fully protected.

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31-band high-precision lossless PEQ

DEL (Dual Engine Limiter) technology together with proprietary algorithms allows the K17’s PEQ to be capable of dynamic range compression(DRC)/ dynamic range expansion (DRE), limiter, and compressor adjustment functions. PCM 44.1k~96k signals can be processed in the PEQ without sample rate conversion. Fine adjustments of audio parameters are thus possible, allowing for adjustments such as a gain range of +12~-24dB and a Q value range of 0.4dB~128dB. The PEQ allows the user to simulate or correct the frequency response curve PEQ settings can be easily exported,  imported, shared, and saved - making it easy for anybody to use the PEQ and correct or simulate various frequency response curves of different headphones.

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AKM flagship DAC AK4191+AK4499EX*2

In the K17 is the flagship AKM DAC chip combination - AK4191+AK4499EX*2. Two AK4499EX chips handle each channel. The 8-channel to 4-channel LPF design reduces common mode interference, resulting in better channel separation and dynamics. It also features a newly designed architecture with fully separated digital/analog portions, which also incorporates the newly developed “DWA ROUTING” technology for an even cleaner audio background and improved resolution.

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Eight operating modes

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大标题-双击进行编辑

Fully balanced design

From the DAC, to the I/V conversion, to the low-pass filtering, and to headphone amp, the entire audio circuit is of a fully differential circuit architecture design. This ensures both high dynamic ranges of the signals as well as significantly reduced crosstalk. Various parts of the audio circuit, including the I/V conversion and LPF stages, use multiple low-noise precision operational amplifiers OPA1612 to ensure dynamic audio output.

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Physically separated boards

The various sections of the internal power supply, digital, and analog sections are all located on physically separated circuit boards to avoid interference between them. This ensures the accuracy and integrity of signal processing for purer, cleaner audio output.

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Precision power supply design

Powering the K17 is a custom high-quality low-noise transformer, ensuring the purity of the power supplied. Additionally, five 4700μF electrolytic capacitors provide ample power reserves to ensure a steady supply of power.

35W low-noise linear power supply Five large 4700μF electrolytic capacitors

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Separate power supplies for analog and digital circuits

Separate power supplies for the digital and analog circuits effectively avoid crosstalk and interference between them.

Multi-stage analog power supply

The K17’s analog audio circuit is powered by a multi-stage power supply. Many of the stages have a dedicated power control circuit, including those for the digital-to-analog conversion, LPF, and transistor. Low-noise, high-power supply rejection ratio (PSRR) TPA7A47/7A33 LDO regulators also act as secondary voltage regulators to continuously provide stable and clean power.

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Precisely restored audio Every last detail audible

The K17 employs three industry-leading ACCUSILICON ultra-low phase noise femtosecond crystal oscillators, including the AS318-L (45.1584MHz, 49.1520MHz) and AS318-Pro (24.576MHz). These significantly reduce the impact of phase noise on audio signals, allowing audio signals of various sampling rates to be precisely and faithfully restored – resulting in purer and more consistent sound.

3 ACCUSILICON low phase noise femtosecond audio crystal oscillators

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High-end parts All for great sound

8 Panasonic film capacitors + 32 wafer resistors

Low temperature drift and low noise mean consistent sound quality in both hot and cold temperatures.

High-quality Beryl solid capacitors

High-quality sound, grand soundstage

Ultra-low ESR, strong anti-interference capabilities, stable and pure power supply

4 ELNA SILMIC II capacitors 4 Nichicon audio-specific capacitors 6 ELNA RA3 audio-specific capacitors

4 sets of silver-plated oxygen-free copper connecting cables

Audio signals transmitted between different internal boards are high-quality with minimal loss via the use of silver-plated oxygen-free copper wires.

NEUTRIK gold-plated connectors

Tulip-shaped connectors that are anti-oxidation and wear-resistant, allowing for precise and reliable connections.

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Dual-core design Smooth stable experience

High-performance X2000 multi-core processor: The processor features a unique design consisting of a main XBurst@2 CPU core with two logic CPUs plus an XBurst@ small core. This chip offers excellent computing power with low power consumption. The X200 ensures precise audio signal processing and stable, smooth audio playback. Low-power ESP32-S3 SoC: Within this chip is a high-performance Xtensa 32-bit LX7 dual-core processor capable of running up to 240MHz as well as an ultra-low power consumption co-processor. This SoC allows the K17 to provide a fast and smooth user experience.

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Square and circle A surprisingly synergistic combo

The design cleverly blends square and circle into a harmonious whole, combining retro elegance with a modern technological aura, for a refreshing experience. There is thoughtful consideration in both functionality and design: examples include the multiple knobs exist for easier control, and a grid structure for faster heat dissipation.

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Touch controls

The custom 3.93-inch LCD screen allows you to quickly adjust various settings and gain access to various functions through touch.

Easy to use Multiple control methods

5 control knobs

Going into standby just takes one press. The knobs also allow you to quickly and easily adjust volume, gain output, and other settings.

Included infrared remote control

A remote allows you to more conveniently switch between operating modes, pick between EQ settings, and adjust the volume from a comfortable distance.

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Listen without worry Multiple protection systems

Listen with peace of mind with various protection mechanisms that can intelligently detect abnormal conditions and perform automatic protection to avoid damage to the device, including headphone amp temperature protection, transformer temperature protection, output overload protection, output DC protection, and power input overcurrent protection.

Transformer temperature protection

Output overload protection

Output DC protection

Power input overcurrent protection

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Wired or wireless Always online

The Ethernet port supports up to Gigabit speeds for fast and stable data transmission. The AP6256 Wi-Fi module supports 2.4G and 5G wireless networks as an alternative yet equally stable method of transmitting lossless audio.

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Many usage scenarios

Scenario 1: K17 is connected to a computer via USB, with headphones and active speakers to be connected simultaneously.

Scenario 2:  K17 is connected to a computer, plays music on a NAS through Roon.

Scenario 3:K17 is connected to an amp and passive speakers, receiving music from an iPad through AirPlay.

Scenario 4: K17 is connected to a digital music player via the front panel USB port, with headphones or active speakers connected.

Scenario 5: K17 is connected to a USB flash drive or portable hard drive, locally playing music through headphones or active speakers.

Scenario 6：K17 receives an analog signal from a digital music player, processes the signal with PEQ, and outputs through headphones or active speakers via the line output.

*The K17 is currently being certified to be Roon Ready. *Maximum current output of the USB-A port is 500mA, enough for USB flash drives. If you need to connect a  portable hard drive, please connect a separate power supply for that drive.

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Buttons and ports labeled

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Packing list

①---------------------------------------------------K17*1 ②----------------------------------------AC power cord*1 ③---------------------------------------Remote control*1 ④--------------------------------------  XLR4 plugcover*1
⑤-------------------------------------------- ----    Fuse*1
⑥---------------------------------------USB data cable*2 ⑦---------------------------  Headphone plug adapter*1
⑧---------------------------------------- Warranty card*1
⑨-------------------------------------Quick start guide*1

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Headphone amp  temperature protection

*Pictures are for reference only. The real product may vary.

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S15

R9

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35W low-noise linear power supply Ample energy source

The S15 is powered by a custom high-quality low-noise transformer that ensures the purity of the power supplied. It is also equipped with four 4700μF ELNA audio capacitors that serve as an ample power reserve for continuous power.

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S15 parameters

An all-in-one HiFi solution for the living room Premium versatility , Deeply capable

FIIO’s first full-size, all-in-one media streamer S15
Proficient in media streaming/network streaming/LAN playback/local playback decoding/preamplifier/digital jukebox
Equipped with flagship parts, a wide variety of interfaces, and numerous ways to control it, and is fully compatible with external decoders/amplifiers/speakers With its uncompromised high performance and numerous methods to help you easily control your music, it redefines what a media streamer can do.

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Majestically grand, Rock-solid

Full-sized, all-metal construction, phenomenal sound

The S15 features a standard width of 430mm, allowing it to seamlessly integrate with your other equipment in the living room to create a unified audio system. Thanks to its 5 kg all-metal body and stable non-slip feet, it effectively prevents sound degradation caused by vibrations.

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7.84-inch automative-grade large  color screen,Excellent usability

With a larger color screen than similar products, combined with a custom Android 12 build that features a custom  landscape display system, the display is clear and easy to read. Interacting with the device directly is intuitive, so that it is easy to handle various operations right out of the box. You can directly feel how each touch gets you easily and quickly to where you want.

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Cutting-edge masterpiece A window into the future

Everything is covered,A true audio “master”

Streaming media: Android 12 + a custom landscape display system means you can freely install many apps and smoothly use them. Network streaming: With it being Roon Ready and AirPlay, and capable of DLNA streaming and Bluetooth reception, you can enjoy high-quality streaming music.

LAN playback: Play music from your NAS/LAN/cloud servers through network protocols including UPNP/SMB/WebDAV.

Local playback: Besides locally stored music, you can also play files from microSD cards, USB flash drives, portable hard disks, and other devices.

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Precisely restored audio,Every last detail present

Dual ACCUSILICON high-performance ultra-low noise femtosecond crystal oscillators

For the first time, FIIO utilizes two industry-leading ACCUSILICON AS318-B series ultra-low phase noise femtosecond oscillators (45.1584MHz, 49.1520MHz), which have been fully screened. These effectively reduce the impact of phase noise on audio signals, resulting in high levels of decoding fidelity and digital output precision. When paired with high-performance external decoders and amplifiers, you can achieve reference-grade sound.

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Proprietary DAPS (Digital Audio Purification System)

No resampling throughout

FIIO’s proprietary (DAPS digital audio purification system), composed of a custom Android audio core and a low-jitter clock coprocessor, has been refined over many years. It allows for non-resampled audio globally at both the application and system levels. It can also accurately match various sampling rates of PCM and DSD audio for purer music.

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Digital-analog separation Exactly reproducing the original sound

AKM flagship DAC combo AK4191+AK4499EX

Like in the Q15, K9 AKM, and M23, the S15 also utilizes the highly acclaimed AKM flagship DAC combo - AK4191+AK4499EX. This combo is based on a new design that fully separates the digital and analog portions and also incorporates ‘DWA ROUTING Technology’ – all of which enhances signal-to-noise ratio and reduces noise across various amplitudes. The audible result is a cleaner background and improved resolution to deliver a natural, relaxed, and totally unstrained sound.

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Fully balanced analog audio architecture

The S15 uses a fully balanced design, including everything from the DAC decoding to the preamplifier stage. Such a design significantly reduces noise and crosstalk and improves the line and preamp output quality – for which you can choose between fixed or variable gain. The IV, LPF, and other audio sections count on OPA1612 low-noise precision op-amps for high voltage supply to ensure the dynamics in your music are faithfully reproduced.

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Premium materials All in the quest for sound quality

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Physical partitions and shielding Enjoy “pure” heavenly sound

The digital, analog, and power sections are physically separated to prevent mutual interference, which ensures signals are accurately processed and all dynamics within the music are preserved. The end result is that you get to enjoy “pure” heavenly sound.

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Precise power supply design

Separated digital and analog power supplies

This design effectively prevents crosstalk between the analog and digital audio circuits. It also provides better power isolation and interference resistance.

Multi-stage analog power supply

The analog section is powered by a multi-stage power supply, with precisely divided stages for components like the DAC and LPF. Each stage employs numerous precision low-dropout regulators (LDOs) for secondary regulation to ensure a consistent, stable and pure power supply.

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Flagship configuration Seriously capable

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New FIIO OS landscape display system

Custom landscape display system

FIIO’s new custom landscape display system is specifically optimized for landscape screens like that found in the S15. It not only sports a clean and intuitive layout, but also boasts enhanced visual effects for a more immersive experience. It can be easily controlled via close-range touch, companion app, or Bluetooth remote, making it effortless to control whichever way you want to.

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Custom landscape version of FiiO Music

A custom version of FiiO Music tailored for the S15’s display provides quick access to various music playback and setting menus. It supports visual audio effects like VU meters for a more pleasant visual experience.

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Customizable home screen

Unlike other streamers, the S15 allows you to greatly customize it. You can freely edit the home screen layout to better suit your needs.

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Genuinely intelligent Easy to control

App remote control Innovative dual-screen display

FIIO is committed to enhancing the user experience. We have designed a dual-screen display feature within the companion app to allow you to have comprehensive control of the S15 at your fingertips using your phone.

Smart Bluetooth control Control without worries

The included Bluetooth remote control allows you to easily manage music playback and volume adjustment from a distance, including adding tracks to “My Favorites” with just one click. The remote also supports gesture control that lets you handle complex operations seamlessly, ensuring an effortless and outstanding audiovisual experience.

Dual knobs + Dual virtual keys

The knobs allow for more flexibility, while the virtual keys allow for quicker and more convenient controls for certain operations.

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An audiovisual feast,Here it begins Supports HDMI/ARC decoding

The S15 boasts HDMI 2.0 decoding, HDMI output, and even HDMI ARC (Audio Return Channel) capabilities, allowing it to be a crucial component of your audiovisual setup. With the included Bluetooth remote control, instantly immerse yourself into a sumptuous audiovisual feast. HDMI decoding/output: Supports 192kHz/24bit sampling rate HDMI ARC: Supports 44.1/48kHz sampling rate

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Chock full of connectors Easily take to the stage

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10-band high-precision PEQ Boundless enjoyment

With FIIO's proprietary PEQ algorithm and interface, you can finely adjust the PEQ's frequency points, gain, bandwidth, and Q value or correct the headphone's frequency response curve or simulate those of others to your taste.

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Truly versatile All-round brilliance

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* Roon Ready certification is in progress. The specific passing time is subject to FIIO’s official notice.

Media streamer·local playback·decoder·preamplifier | Flagship AKM DAC combo AK4191+AK4499EX | Ultra-low phase noise femtosecond crystal oscillator | Android 12+custom landscape display | Snapdragon 660 + Qualcomm QCC5125 + XMOS 16-core XU316 | 35W low-noise linear power supply | 7.84-inch automotive-grade large color screen | Fully balanced analog audio architecture | HDMI/ARC decoding

*Pictures are for reference only. The real product may vary.

Desktop High-Res Audio Streamer S15

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Service＆Support

FiiO respect and protect the personal privacy of all the users in using any network service on www.fiio.net and FiiO Music. In order to provide you
with more accurate and more personalized service, FiiO will use or disclose your personal information in accordance with provisions of
this Privacy Policy and handle with high discretion. Except any other regulations of this Privacy Policy, FiiO will not disclose the information
or provide to any third party without your prior permission. FiiO will update this Privacy Policy from time to time. This Privacy is an integral
part of the service agreement of FiiO, so you are deemed to agree with this Private Policy when you agree with the service agreement of FiiO.
1. Scope of application
a) Required personal information when registering account on FiiO official website.
b) User information you provided in the FiiO account center when registering for product exchange or other activities that organized by FiiO.
c) Other personal information that FiiO acquired through proper means. You are aware of and agree that the following information do not apply in this Privacy Policy:
1) The key words in your published comments on FiiO forum.
2) Your public information available on FiiO forum, including but not limited to, activity participation, transaction information, and other sharing information.
3) Any behavior that goes against law or regulations of FiiO forum.
2. Use of information

a) Without your prior permission, FiiO will not provide it to any third party, nor to sell, rent, share or do any transaction.
b) FiiO will not allow any third party to collect, edit, sell or distribute your personal information free of charge.
c) To provide better service to users, FiiO will provide you with possible information to your interests according to your personal information.
3. Disclosure of information

In the following cases, FiiO will disclose your personal information fully or partially in accordance with your personal willingness or legal regulations:
a) Disclose it to the third party with your prior permission.
b) To provide you with the requested products or services, FiiO have to share your personal information with the third party.
c) In accordance with the relevant provisions of the law or other regulations of administrative or judicial organization, FiiO disclose it to the third party, administrative or judicial organization.
d) In case of any violation to relevant law or regulations, rules of FiiO service agreement caused by your behavior, FiiO have  to disclose your personal information to the third party.
e) If you are a qualified intellectual property owner and already filed a lawsuit, on the reasonable request of the accused person, FiiO have to disclose the information so as to settle the dispute.
f) Other situations that FiiO deem as proper according to law, regulation or the policy of website.

4. Storage of information

All your information and related data that acquired by FiiO will be stored on FiiO server or affiliated companies of FiiO.

5. Security of information

a) There is security protection function for each FiiO account. And FiiO will use security precautions such as encrypted password to protect your information from any loss,
abuse or alteration. Despite the security measures, you are still required to keep your username and password well, since there is no perfect security on network.
b) When using FiiO network services, please properly protect your personal information, and only disclose to others when necessary.
If you find your username and password of FiiO account has been disclosed, please contact FiiO immediately to take corresponding measures.

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