Fosi Audio K7 Desktop DAC Headphone Amplifier 

Born for HiFi and Entertainment

The K7 is an all-in-one HiFi DAC and headphone amplifier, developed based on in-depth interviews with hundreds of headphone HiFi and gaming enthusiasts. It supports mainstream digital inputs including USB, optical, and coaxial, and features aptX HD/LL for high-quality Bluetooth audio streaming.

• Input: Bluetooth, COAX, OPT, USB
• Output: 3.5mm Single-ended/4.4mm Balanced Headphone Output, RCA
• SNR: ≥ 121dB; THD+N: ≤ 0.0002%; Noise Floor: ≤6.5μV
• Input Voltage: DC 12V

General Specs
Chipset
XMOS XU208+AKM4493SEQ+QCC 3031+TPA6120
Maximum Sampling Rate
USB:PCM 384kHz-32bit/DSD256Optical: PCM 24bit/192kHzCoaxial: PCM 24bit/192kHzBluetooth:PCM 24bit/48kHz
Headphone lmpedance
16-300Ω
Input
Coaxial, Optical, USB-C,Bluetooth,3.5mm Microphone
Output
RCA, 3.5mm Single-Ended,4.4mm Balanced
Firmware Upgrade
XMOS firmware can be updated via the Type-C interface
Bluetooth Version
5.0
Bluetooth Connection Distance
≤13m
Noise Floor
≤2.5μV
Bluetooth Transmission Audio Format
SBC, AAC, aptX, aptX HD, aptX LL
Input Voltage and Current
DC 12V 2A
USB Compatible
Devices
Windows 7,8, 8.1,10,11 (Driver required)Mac OS X, Linux (No driver required)

Audiophile-Grade Chipset

For high resolution, wide dynamic range, ultra-low noise, low latency, and high output power. Captures more details for a flawless and pure listening experience