Fosi Audio K7 HiFi DAC & Headphone Amplifier

$199.99

+ Free shipping

Features

Audiophile-Grade Chipset Integrated

All-in-One Desktop Hub

Input: Bluetooth, COAX, OPT, USB

Output: 3.5/4.4mm Balanced Headphone Output, RCA

Quantity

Free shipping 

Money-Back Guarantee

Customer support

24 Months Warranty

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Born for HiFi and Gaming

Poster

The K7 is a versatile gaming HiFi DAC/headphone amp, developed based on in-depth feedback from over a hundred HiFi and gaming enthusiasts. It supports mainstream digital inputs like USB, optical, and coaxial, and is equipped with aptX HD lossless Bluetooth codecs. 

The K7 also features a microphone input with noise reduction, ensuring your voice is heard clearly online. Perfectly compatible with PS5 Pro, PS5, Switch, PC, Mac, tablets, TVs, and projectors, the K7 offers balanced headphone and line outputs. It easily handles music listening, gaming, work, live streaming, and multimedia needs. With its compact design and rich functionality, the K7 ensures an exceptional listening and gaming experience. 

Reviews are in...

Poster
Poster

Why K7 DAC/Amp?

HiFi and Gaming,
One Device Meets Multiple Needs

Headphone Amplifier

Pure Music Enjoyment

With ultra-high resolution and extremely low distortion, it accurately reproduces every detail. The high-power output drives your headphones to their full potential, allowing you to enjoy the purity of music. 

Best Gaming DAC K7

Gaming Entertainment

Compatible with devices such as PC, PS5 Pro, PS5, and Switch, it effortlessly achieves precise audio decoding. Features like sound localization and sound effects adjustment help create an immersive gaming experience, making every battle more thrilling. 

Best Gaming DAC K7

Gaming Entertainment

Compatible with devices such as PC, PS5 Pro, PS5, and Switch, it effortlessly achieves precise audio decoding. Features like sound localization and sound effects adjustment help create an immersive gaming experience, making every battle more thrilling. 

Best Budget DAC

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

Best Budget DAC

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

DAC Bluetooth Amp

Comprehensive Digital Inputs
with Versatile Outputs

Comprehensive Digital Inputs
with Versatile Outputs 

DAC Converter

3.5mm 
Single-Ended Headphone Output 

Rated Power 

≥600mW+600mW @32Ω

4.4mm 
Balanced Headphone Output 

Rated Power

≥2.1W+2.1W @32Ω

3.5mm 
Microphone Input 

Intelligent Noise Reduction for Clearer Communications

Best Bluetooth Amp

Hi-Res

Bluetooth Codecs

Equipped with the Qualcomm QCC3031 Bluetooth chip, supporting aptX HD, aptX LL, aptX, AAC, and SBC codecs.

Under 40 ms

Imperceptible latency

Lossless PCM 24bit/48kHz 

Sampling Rate

1.5-Inch LCD
High Definition Display

User-Friendly and
Practical Control Design

Best Desktop DAC

Tactile Shortcut Buttons

Best Desktop DAC

Multi-Functional Pressable Knobs

Best Desktop DAC

Angled Ergonomic Design

Best Desktop DAC

Connection Diagram

All-Aluminum Alloy Body, 
with CNC Integrated Design  

A compact and exquisite full-metal chassis with fine sandblasting, robust and durable 

Best Headphone Amplifier

All-Aluminum Alloy Body, 
with CNC Integrated Design

A compact and exquisite full-metal chassis with fine sandblasting, robust and durable 

Best Budget DAC
Best Gaming DAC

Triple Intelligent Protection,
Uninterrupted Gaming and Entertainment

Fully Balanced Circuitry,
0.0002% Ultra-Low Distortion

Effectively reduces noise and interference, equipped with gain control and headphone protection circuits to ensure clear, authentic audio output, enhancing your listening experience

Multiple LDO Regulators
Ensuring Clear Sound Quality

Each stage utilizes low-noise LDO regulators for pure power output, enhancing audio performance with robust power support

Application Scenarios

Visible Superior Sound Quality

Through stringent real-world testing, sound excellence is transformed from abstract to a tangible assurance of quality

General Specs

Chipset

XMOS XU208+AKM4493SEQ+QCC 3031+TPA6120

Maximum Sampling Rate

USB:PCM 384kHz-32bit/DSD256

Optical: PCM 24bit/192kHz

Coaxial: PCM 24bit/192kHz

Bluetooth: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)

Audio Parameters

4.4mm Balanced Headphone Output

Rated Power Output

L+R≥2100mW+2100mW (32Ω/THD+N<1%)

SNR

121dB

THD+N

<0.0002%

Dynamic Range

121dB

Noise Floor

≤ 6.5μV

3.5mm Single-Ended Headphone Output

Rated Power Output

L+ R≥600mW+600mW (32Ω/THD+N<1%)

SNR

122dB

THD+N

0.0005%

Dynamic Range

121dB

Noise Floor

≤2.5μV

Frequency Response

20Hz-20kHz (±0.1dB)

RCA Output

Output Level

≥2Vrms

SNR

20Hz-20kHz (±0.1dB)

THD+N

0.0005%

Dynamic Range

121dB

Noise Floor

≤3μV

Frequency Response

20Hz-20kHz

Packing List

  • The microphone can only be used in USB input 1.0 mode, not in Bluetooth, optical fiber, etc; The microphone is not supported in RCA output mode, only in headphone output mode.
  • Because 2.0 supports higher sampling rates, while the sampling rate of the microphone is only 16bit/48khz. When playing high sampling rates such as dsd or 384khz, if the microphone is turned on at the same time, the two will conflict.
  • Not supported.
  • Yes, K7 has targeted the ambient noise frequency band and has processed it in an algorithm to make your call clearer.
  • After turning on the microphone mute function with one click, the other party will not hear any of your voice.

Customer Reviews

Based on 1 review
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M
Massimo Mazzara
Big Sound, Zero Hassle.High-Fidelity Performance and Seamless Integration

At first listen, the total absence of background noise stands out: no hums, clicks, or interference; the sound is not only precise but also surprisingly clean. Voices through the headphones are clear and well-defined, with a reproduction that provides naturalness and detail. The tone control, for both bass and treble, allows fine and pleasant adjustment, enabling you to tailor the listening experience to personal preferences without distorting the sound character.
The Fosi Audio K7 stands out for its refined design and remarkable flexibility, making it a suitable solution for a wide range of listening needs. Thanks to its compatibility with various devices and the complete absence of required drivers or dedicated software, it integrates seamlessly into any setup. Its sound performance, both precise and well-balanced, makes it an excellent choice for entertainment as well as for more technical or professional use.