Overview
Fosi Audio K7 HiFi Gaming DAC & Headphone Amplifier
Born for HiFi and Gaming
The K7 is a flexible HiFi DAC and headphone amp designed with input from over a hundred audio and gaming enthusiasts. It supports USB, optical, and coaxial digital inputs, along with aptX HD Bluetooth for high-quality wireless audio. A built-in mic input with noise reduction ensures clear voice communication for online use.
Fully compatible with PS5 Pro, PS5, Switch, PC, Mac, tablets, TVs, and projectors, the K7 includes balanced headphone and line outputs for expanded versatility. Whether you're listening to music, gaming, working, streaming, or watching movies, its compact design and broad functionality deliver outstanding performance. The K7 is built to elevate both your listening and gaming experiences across all your devices.
The Reviews are in...
Why the K7/DAC Amp?
Pure Music Enjoyment
With ultra-high resolution and exceptionally low distortion, it captures every detail with precision. Its high-power output unlocks the full performance of your headphones, letting you experience music in its purest form.
Gaming Entertainment
Compatible with devices like PC, PS5 Pro, PS5, and the Switch, it delivers precise audio decoding with ease. Features such as sound localization and adjustable sound effects enhance immersion, making every gaming moment more intense and engaging.
Audiophile-Grade Chipset
Delivers high resolution, wide dynamic range, ultra-low noise, low latency, and high output power. Reveals more detail for a flawless and pure listening experience.
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
1.5" LCD High Definition Display
Fully Balanced Circuitry,0.0002% Ultra-Low Distortion
Effectively minimizes noise and interference, featuring gain control and headphone protection circuits to deliver clear, accurate audio and elevate your listening experience.
Multiple LDO Regulators
Ensuring Clear Sound Quality
Each stage is powered by low-noise LDO regulators, providing clean power delivery that enhances audio performance with strong, stable support.
Application Scenarios
Visible Superior Sound Quality
Rigorous real-world testing turns sonic excellence from a concept into a concrete guarantee of quality.
General Specifications
| 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 Impedance | 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 (42.65 ft) |
| 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 | 121dB |
| 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 |