FiiO K15 Desktop DAC and Headphone Amplifier

FiiO K15 Desktop DAC and Headphone Amplifier

Product code:
K15-SilverK15-Black
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Free delivery 2-3 weeks
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1-year-warranty
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£499

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FiiO K15 Desktop DAC and Headphone Amplifier

Features

  • High-Performance Desktop DAC and Headphone Amplifier with Streamer Function
  • High-End Dual DAC Setup(Dual AK4497S)
  • Discrete Class-AB Transistor Current Boosting Headphone Amplifier Circuit
  • Two Ultra-Low Phase Noise Femtosecond Crystal Oscillators
  • 3000mW+3000mW Powerful Output
  • Fully Balanced Audio Circuitry
  • 3.93” Touch Screen Display
  • Infrared Remote Control Included
  • 2.4G/5G Dual-Band WiFi Support+Gigabit Ethernet Support
  • High-Resolution Bluetooth Input
  • LDAC, AAC, SBC, etc. Bluetooth Codecs Supported
  • Local Playback Support with External USB Storage
  • Streaming Function with Roon Ready and AirPlay Support
  • Professionally Designed Power Supply
  • Independent Analogue and Digital Power Supply
  • 10-Band PEQ Function Support
  • Multi-Layered Circuit Protection
  • Two attractive colours

Specifications

General Specifications
Name/Model K15 Hardware solution Main control: X2000; MCU: ESP32-S3; DAC: AK4497S*2; USB decoding: XU316; Bluetooth decoding: QCC5125; AMP: MJE243G/253G discrete transistor current amplification
Working mode USB DAC mode/Coaxial decoding mode/Optical decoding mode/Line in mode/Balanced in mode/Bluetooth receiving mode/Streaming media receiving mode/Local playback mode
Color Black/Silver Weight About 2100g
Dimensions About 244.6x213x66.8mm Volume control Knob/Touch-on-display/Remote control
MQA Supports MQA full decoding Driver-free mode (Switch mode) Supported
Gain Ultra high gain mode/Super high gain mode/High gain/Medium gain/Low gain Bluetooth receiving (5.1) SBC/AAC/aptX/aptX LL/aptX HD/aptX Adaptive/LDAC
Display 3.93-inch LCD (240*1020) bezel-less screen Touch-on-display Supported
PEQ Supports 10-band PEQ (No PEQ processing in line input and balanced input) FIIO Link Supports settings through the app
WiFi Supports 2.4G/5G dual-band WiFi Firmware upgrade SOC firmware: Upgrade through the rear USB-A port
MCU firmware: Upgrade through the rear RS232 port
XMOS firmware: Upgrade through the front or rear USB-C port
Remote control Supports IR remote control (only the one included in the accessory) Knob indicator light Supports customizing color, brightness, supports always-on indication or RGB pulsing
Max. supported sampling rate (PEQ=OFF) USB decoding: Up to 768kHz/32bit; DSD512 (Native) Screen status indication Working mode, output mode
Coaxial input decoding: Up to 192kHz/24bit; DSD64 Track format, sampling rate
Optical input decoding: Up to 96kHz/24bit EQ, volume
Streaming decoding: Up to 384kHz/32bit; DSD256 (DOP) Network status, Bluetooth codec
Local playback: Up to 384kHz/32bit; DSD256 Gain
Adaptive impedance PO: 8~150Ω
BAL: 8~350Ω
Buttons and Ports
Knob Power on/off knob*1+Analog output level knob*1+Gain level knob*1+Volume knob with button*1+Menu knob with button*1 USB port Type-C USB*3 (Data transmission port*2+RS232 DSP regulating port*1)
USB-A*1 (Data transmission port)
Balanced headphone out Standard 4.4mm port*1+XLR4 balanced port*1 Headphone out Standard 3.5mm port
Digital optical input port Optical port Digital coaxial input port RCA port
Balanced line output port XLR3 balanced port Single-ended line output port RCA port
Balanced line input port Standard 4.4mm port Single-ended line input port RCA port
Slide switch Power switch Housing grounding terminal M4 banana port (Can be directly connected to use)
Ethernet port 1000Mbps
Power Supply Parameters
Power supply AC 100-240V~50/60Hz; DC 12V/≥2.5A (either-or) Battery capacity N/A
Audio Parameters
Performance and parameters of headphone output (6.35mm out, USB DAC/Coaxial decoding/Optical decoding, Ultra high gain mode)
Output power 1 L+R≥1400mW+1400mW (16Ω, THD+N<1%) Output impedance <1Ω (32Ω)
Output power 2 L+R≥1400mW+1400mW (32Ω, THD+N<1%) Crosstalk ≥76dB (1kHz@32Ω)
Output power 3 L+R≥180mW+180mW (300Ω , THD+N<1%) THD+N <0.00054% (1kHz/-12dB@32Ω)
Output power 4 <5.3μV (A-weighted) SNR ≥122dB (A-weighted)
Frequency response 20Hz~20kHz: attenuation<0.2dB
20Hz~80kHz: attenuation<2.8dB
Peak output voltage >20.6Vp-p
Performance and parameters of headphone output (6.35mm out, USB DAC/Coaxial decoding/Optical decoding, Super high gain mode)
Output power 1 L+R≥1400mW+1400mW (16Ω, THD+N<1%) Output impedance <1Ω (32Ω)
Output power 2 L+R≥760mW+760mW (32Ω, THD+N<1%) Crosstalk ≥76dB (1kHz@32Ω)
Output power 3 L+R≥90mW+90mW (300Ω , THD+N<1%) THD+N <0.00058% (1kHz/-10dB@32Ω)
Output power 4 <5.3μV (A-weighted) SNR ≥119dB (A-weighted)
Frequency response 20Hz~20kHz: attenuation<0.2dB
20Hz~80kHz: attenuation<2.8dB
Peak output voltage >14.6Vp-p
Performance and parameters of single-ended line output (RCA out, USB DAC/Coaxial decoding/Optical decoding)
THD+N <0.00071% (1kHz/-11dB@10kΩ) SNR ≥119dB (A-weighted)
Crosstalk ≥119dB (1kHz@10kΩ) Output power 4 <2.6μV (A-weighted)
Frequency response 20Hz~20kHz: attenuation<0.2dB
20Hz~80kHz: attenuation<2.8dB
Line output level 2.4Vrms  (1kHz@10kΩ)
Performance and parameters of balanced headphone output (4.4mm/XLR4 out, USB DAC/Coaxial decoding/Optical decoding, Ultra high gain mode)
Output power 1 L+R≥1400mW+1400mW (16Ω, THD+N<1%) Output impedance <1.5Ω (32Ω)
Output power 2 L+R≥3000mW+3000mW (32Ω, THD+N<1%) Crosstalk ≥116dB (1kHz@32Ω)
Output power 3 L+R≥700mW+700mW (300Ω , THD+N<1%) THD+N <0.00059% (1kHz/-13dB@32Ω)
Output power 4 <9.5μV (A-weighted) SNR ≥120dB (A-weighted)
Frequency response 20Hz~20kHz: attenuation<0.2dB
20Hz~80kHz: attenuation<2.8dB
Peak output voltage >41Vp-p
Performance and parameters of balanced headphone output (4.4mm/XLR4 out, USB DAC/Coaxial decoding/Optical decoding, Super high gain mode)
Output power 1 L+R≥1400mW+1400mW (16Ω, THD+N<1%) Output impedance <1.5Ω (32Ω)
Output power 2 L+R≥2800mW+2800mW (32Ω, THD+N<1%) Crosstalk ≥116dB (1kHz@32Ω)
Output power 3 L+R≥350mW+350mW (300Ω , THD+N<1%) THD+N <0.00054% (1kHz/-9dB@32Ω)
Output power 4 <9.5μV (A-weighted) SNR ≥120dB (A-weighted)
Frequency response 20Hz~20kHz: attenuation<0.2dB
20Hz~80kHz: attenuation<2.8dB
Peak output voltage >29Vp-p
Performance and parameters of balanced line output (XLR3, USB DAC/Coaxial decoding/Optical decoding)
THD+N <0.00055% (1kHz/-8dB@10kΩ) SNR ≥120dB (A-weighted)
Crosstalk ≥117dB (1kHz@10kΩ) Output power 4 <3.3μV (A-weighted)
Frequency response 20Hz~20kHz: attenuation<0.2dB
20Hz~80kHz: attenuation<2.8dB
Line output level 4.8Vrms (1kHz@10kΩ)

Description

FiiO Introduces A Flagship-Grade All-in-One DAC & Amp – The K15

Step into a new era of high-fidelity desktop audio with the FiiO K15, a feature-rich all-in-one DAC and headphone amplifier built for serious audiophiles. As one of the first to adopt dual AKM AK4497S DAC chips with enhanced VELVET SOUND technology, the K15 delivers low distortion, wide dynamic range, and lush musicality. With powerful Class-AB amplification, 8 versatile playback modes, and advanced streaming support including Roon Ready, AirPlay and Bluetooth LDAC, the K15 is engineered for versatility and precision. Whether you’re driving power-hungry headphones or fine-tuning your sound with onboard PEQ, this fully balanced, precision-built desktop unit offers everything you need for an uncompromised listening experience.



Features Dual AKM DAC With VELVET SOUND Tech For Hi-Fi Sound

FiiO K15 is among the first to feature dual high-end AKM AK4497S DAC chips, enhanced with AKM’s upgraded ‘VELVET SOUND’ technology. This audio architecture ensures low distortion, ultra-wide dynamic range, extended signal bandwidth, and impressively low power consumption. As a result, it delivers a natural and immersive sonic experience with rich detail from low to high frequencies. VELVET SOUND embodies AKM’s philosophy of achieving true-to-life sound through refined engineering and uncompromising acoustic realism.



Equips Discrete Class-AB Headphone Amplifier for Powerful Output

FiiO K15 incorporates a fully discrete headphone amplifier circuit based on an OP + transistor current-boosting design. A complementary pair of ON Semiconductor MJE243G/253G transistors ensures high current, low impedance output. This setup provides a balanced output power of up to 3000mW + 3000mW, enabling the K15 to effortlessly drive both demanding full-sized headphones and sensitive in-ear monitors, producing a smooth, melodious, and natural sound signature.



Offers Eight Versatile Operating Modes For Tailored Listening Needs



Embeds Fully Balanced Circuit With Physically Isolated Boards

FiiO K15 employs a fully differential design from DAC decoding to headphone amplification. This architecture ensures a wide dynamic range and significantly reduces crosstalk and noise, elevating overall audio purity. Digital, analogue, and power sections reside on separate physical boards to ensure signal integrity. Two Accusilicon low-phase-noise femtosecond crystal oscillators (45.1584MHz and 49.1520MHz) ensure ultra-precise signal reproduction across all sampling rates for stable, high-fidelity playback.



Robust Power Supply Design for Maximum Isolation and Purity

FiiO K15 features a built-in next-gen 30W (12V-2.5A) industrial-grade power supply, supporting ultra-wide 85–305VAC input voltage and extreme operating temperatures (-40°C to 85°C). It also accepts external 12V-2.5A DC power inputs, including high-performance linear supplies for enhanced audio performance. A precisely segmented multi-stage analog power section handles DAC, LPF, and amplifier stages, using up to 14 low-dropout regulators to ensure clean, stable power delivery.



One Device, Multiple Scenarios

FiiO K15 is a highly versatile device that can be used in multiple use case scenarios. This includes using the device as a USB DAC, Wireless Bluetooth DAC, Headphone Amplifier, Network streamer, local playback, and a complete all-in-one solution as well. We are pretty sure the FiiO K15 perfectly fits in every setup!



Fused With Premium Components for High-End Performance

FiiO K15 integrates high-quality components for an extraordinary performance. It features 8 Ruby Film Capacitors + 32 Wafer Resistors: Low noise and temperature stability for consistent performance. The 2 Nichicon 3300µF + 4 ELNA MILIC II + 8 ELNA RA3 Capacitors provide rich sound with enhanced stage depth. It utilises Beryl Capacitors for ultra-low ESR and excellent anti-interference properties. K15 is fused with silver-plated oxygen-free copper wires to ensure minimal signal loss across internal board connections.



Utilises Dual Master Processors For Smooth And Stable Operation

FiiO K15 is equipped with the high-performance multi-core X2000 processor featuring dual XBurst\@2 cores and a micro-core for low-power, high-efficiency audio processing. Additionally, the ESP32-S3 MCU includes a dual-core Xtensa 32-bit LX7 and an ultra-low-power coprocessor clocked up to 240MHz, ensuring seamless system control and snappy user interactions.



Wired or Wireless

Always a stable connection



Seamless Connectivity With Wired & Wireless Compatibility

FiiO K15 offers a comprehensive suite of connectivity options like USB Decoding, Streaming via Roon or AirPlay, Local USB Playback, Optical/Coaxial Decoding, Single-Ended & Balanced Analogue Inputs and Bluetooth Wireless Decoding. It also includes a Gigabit Ethernet port for fast, stable wired transmission and an AP6256 Wi-Fi module supporting 2.4G and 5G bands, ensuring seamless wireless playback of high-resolution audio.

Features 10-Band PEQ For Precision & Tailored Tuning

FiiO K15 includes a 10-band high-precision PEQ on all digital input modes (USB, optical, coaxial, Bluetooth, streaming, and local). Users can simulate and adjust the frequency response of connected headphones using FiiO’s web-based PEQ tool, making it easy to fine-tune the sound to personal preference.





Meticulously Crafted For Impeccable Aesthetics & Extensive Protection

FiiO K15 showcases a modern blend of square and round aesthetics, reflecting both classic and futuristic styling. Thoughtful touches like tactile knobs, a responsive display, and a heat-dissipating grid structure enhance usability and durability. Extensive protection mechanisms are integrated to detect and address abnormal conditions in real-time, safeguarding your gear and listening experience.



Buttons and Ports Labelled



Accessories to Get You Started

1. AC Power Cord * 1
2. Remote Control * 1
3. XLR4 Decorative Plug * 1
4. Fuse * 1
5. USB Data Cable * 2
6. Headphone Plug Adapter * 1
7. Warranty Card * 1
8. Quick Start Guide * 1

Additional information

Colour

Black, Silver

Warranty

 

Backed with a 1-year Fiio Warranty

 

 

 

 

Delivery Info

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Delivery Information

As a company our primary goal is to provide a seamless service that results in customer satisfaction. We aim to deliver within 3 working days. Unfortunately, there may be occasions where this time frame may not be met due to unforeseen circumstances; in this instance, we deliver product/s as soon as we can. All delivery charges are included within the prices quoted, unless otherwise specified.

All small items are usually delivered between 9am and 6pm, on a Monday to Friday, unless a Saturday delivery is requested. Follow My Parcel is an industry-changing innovation from DPD Local, which will give your customers unparalleled levels of information and peace of mind.Not only will your customers receive a one hour delivery timeslot, but they’ll now also be able to track the progress of their parcels on a map as our drivers make their way to the delivery addresses. Follow My Parcel will:

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