

149,00€
Out of stock
DAC Headphone Amplifier CS43131 XMOS XU316 2xTPA6120 20Hz-20kHz 32bit 384kHz DSD256
FOSI AUDIO C3 DAC Headphone Amplifier for Gamers-Generation Z.
The Fosi Audio C3, thanks to its XMOS XU316 USB interface and CS43131 DAC chip, supports high-resolution audio streams up to PCM 32bits 384kHz and DSD256 via its USB-C input. The Toslink optical and SPDIF coaxial inputs support PCM up to 24bits 192kHz. The C3 thus provides an audiophile listening experience with faithful reproduction of details.
The circuit integrates two TI TPA6120 chips, allowing its 3.5mm jack headphone output a power of 2x320mW under 32Ω, enabling it to drive a wide range of headphones and earphones while revealing subtle details in gaming audio.
Primarily designed for gaming use, the C3 integrates the StepSense™ feature allowing improved detection and amplification of footsteps, combined with multichannel support via activation of 7.1 audio enabling better distance perception and enhanced immersion.
To support these features, the C3 is compatible with a web app allowing configuration through presets or via equalization controls.

| 1 | AI Noise reduction switch (ANC) |
| 2 | USB power input |
| 3 | Optical input |
| 4 | Coaxial input |
| 5 | RCA output |
| 6 | Indicators |
| 7 | On / Off / Input mode selector |
| 8 | Microphone mute button |
| 9 | UAC mode selector |
| 10 | FPS / 7.1 selector |
| 11 | Main volume control |
| 12 | Microphone level control |
| 13 | 3.5mm jack headphone and microphone |
Technical specifications
| SPECIFICATIONS | |
|---|---|
| Product type | DAC Headphone amplifier |
| USB interface | XMOS XU316 |
| DAC chip | Cirrus Logic CS43131 |
| Amplification chips | 2x Texas Instrument TPA6120 |
| Inputs | 1x USB-C (Power and Data) 1x Optical Toslink 1x Coaxial 1x 3.5mm Jack microphone input |
| Outputs | 1x Stereo RCA line output 1x 3.5mm Jack headphone output unbalanced |
| Supported sample rates | USB: PCM up to 32bit 384kHz, DSD up to DSD256 Optical Toslink / Coaxial: PCM up to 24bit 192kHz |
| Recommended headphone impedance | 16-300Ω |
| 3.5MM JACK UNBALANCED HEADPHONE OUTPUT | |
|---|---|
| Output power | L+ R ≥ 2x 320mW (32Ω/THD+N<1%) |
| SNR | 123dB |
| THD+N | < 0.0004% |
| Dynamic range | 123dB |
| Noise level | ≤ 3μV |
| Frequency response | 20Hz-20kHz (±0.06dB) |
| RCA LINE OUTPUT | |
|---|---|
| Output level | ≥ 2Vrms |
| SNR | 124dB |
| THD+N | < 0.0005% |
| Dynamic range | 124dB |
| Noise level | ≤ 3μV |
| Frequency response | 20Hz-20kHz (±0.1dB) |
| GENERAL | |
|---|---|
| Power supply | 5V DC |
| Dimensions | 94 x 93.8 x 43.8mm |
| Color | Black |
| Package contents | 1x Fosi Audio C3 1x USB-A/C to USB-C cable 1x 3.5mm Jack Y-split cable |
General Specs
Chipset
XMOS XU316 + CS43131 + TPA6120*2
Maximum Sampling Rate
UAC 2.0:PCM 32-bit/384kHz; DSD256
UAC 1.0:PCM 16-bit/48kHz
OPT:PCM 24-bit/192kHz
COAX:PCM 24-bit/192kHz
Supported Headphone Impedence
16-300Ω
Input
Coaxial, Optical, USB-C (Power & Data), 3.5mm Microphone
Output
3.5mm Headphone, RCA
Firmware Update
USB-C Online Update
Input Voltage
DC 5V
PEQ Page Link
https://cc.fosiaudio.com
USB Driver
Required for DSD/Foobar2000
Windows 7/8/8.1/10/11 (Driver Required)
Mac OS X 10.6+, Linux (Driverless)
Audio Parameters
3.5mm Headphone Output (UAC)
Rated Power Output
L+R ≥ 320mW+320mW (32Ω / THD+N < 1%)
SNR
123dB (A-weighting)
THD+N
0.0004% (A-weighting)
Dynamic Range
123dB
Noise Floor
≤3μv (A-weighting)
Frequency Response
20Hz-20kHz (±0.06dB)
RCA Output (UAC)
Rated Power Output
≥2Vrms
SNR
124dB (A-weighting)
THD+N
0.0005% (A-weighting)
Dynamic Range
124dB
Noise Floor
≤3μv (A-weighting)
Frequency Response
20Hz-20kHz (±0.06dB)