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FiiO K15 Desktop DAC and Headphone Amplifier, Silver

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Colour: Silver

Key Features

  • Dual AKM flagship DACs for detailed sound
  • Discrete Class AB amplifier with 3W per channel
  • Fully balanced design for low noise
  • Roon Ready and AirPlay 2 streaming
  • Independent power supplies for clean performance

FiiO K15 Desktop DAC and Headphone Amplifier, Silver Overview

View this description in German

The FiiO K15 Desktop DAC and Headphone Amplifier is a powerful all-in-one solution for desktop listeners who stream, decode, and drive demanding headphones. It combines dual flagship AKM DAC chips with a fully balanced signal path, giving you clean, detailed sound with low distortion and strong channel separation. A discrete Class AB amplifier delivers up to 3W per channel, so you can confidently power full-sized headphones while still pairing easily with sensitive IEMs thanks to five adjustable gain levels.


Dual low-phase-noise crystal oscillators help maintain stable, high-resolution playback, reducing unwanted interference in your audio. You can stream directly using Roon Ready or Apple AirPlay 2, connect via Bluetooth, or use it as a USB DAC. There's also support for local playback and wired network connections. With separate digital and analogue boards, plus independent power supplies, the K15 keeps every part of your system working cleanly and consistently.

Product Ref: 366054

Full Description

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What's in the Box?

  • FiiO K15 Desktop DAC and Headphone Amplifier
  • 2 x USB User cables
  • AC power cord
  • Headphone plug adaptor
  • Remote control
  • Spare fuse
  • Quick Start Guide

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
Colour 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 customising colour, brightness, supports always-on indication or RGB pulsing Max.
Supported sampling rate (PEQ=OFF) USB decoding: Up to 768kHz/32bit; DSD512 (Native)

Coaxial input decoding: Up to 192kHz/24bit; DSD64

Optical input decoding: Up to 96kHz/24bit

Streaming decoding: Up to 384kHz/32bit; DSD256 (DOP)

Local playback: Up to 384kHz/32bit; DSD256 Screen status indication [-] Working mode, output mode

Track format, sampling rate

EQ, volume

Network status, Bluetooth codec

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

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 power 2 L+R≥1400mW+1400mW (32Ω, THD+N?1 )
Output power 3 L+R≥180mW+180mW (300Ω , THD+N?1 )
Output power 4 ?5.3μV (A-weighted)
Output impedance ?1Ω (32Ω) Crosstalk [-] ≥76dB (1kHz@32Ω) THD+N [-] ?0.00054 (1kHz/-12dB@32Ω) 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 power 2 L+R≥760mW+760mW (32Ω, THD+N?1 )
Output power 3 L+R≥90mW+90mW (300Ω , THD+N?1 )
Output power 4 ?5.3μV (A-weighted)
Output impedance ?1Ω (32Ω)
Crosstalk ≥76dB (1kHz@32Ω)
THD+N ?0.00058 (1kHz/-10dB@32Ω)
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 power 2 L+R≥3000mW+3000mW (32Ω, THD+N?1 )
Output power 3 L+R≥700mW+700mW (300Ω , THD+N?1 )
Output power 4 ?9.5μV (A-weighted) Output impedance [-] ?1.5Ω (32Ω)
Crosstalk ≥116dB (1kHz@32Ω)
THD+N ?0.00059 (1kHz/-13dB@32Ω)
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 power 2 L+R≥2800mW+2800mW (32Ω, THD+N?1 )
Output power 3 L+R≥350mW+350mW (300Ω , THD+N?1 )
Output power 4 ?9.5μV (A-weighted)
Output impedance ?1.5Ω (32Ω)
Crosstalk ≥116dB (1kHz@32Ω) THD+N [-] ?0.00054 (1kHz/-9dB@32Ω)
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)

Product Information

Product code FIIOK15-SILVER
EAN 6953175710837

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