Fosi Audio Q4 DAC

The Fosi Audio DAC-Q4 is a compact DAC and headphone amplifier designed for simple setup and reliable performance. With true plug-and-play functionality, it requires no drivers or software, making it ideal for desktop users seeking an easy upgrade to their audio system.

Equipped with USB, optical, and coaxial inputs, the DAC-Q4 integrates seamlessly with a wide range of digital audio sources. Its RCA output allows connection to amplifiers or powered speakers, making it suitable for both desktop and home audio setups.

The built-in headphone amplifier supports headphones from 16Ω to 200Ω, delivering clear and controlled sound. With bass and treble adjustment, users can fine-tune the audio to match personal preferences or different listening environments.

Its compact design and versatile functionality allow it to be used as a DAC, headphone amplifier, or preamp. Whether connected to a PC, Mac, or other digital source, the DAC-Q4 provides a stable and detailed audio experience.

Features
Plug And Play USB DAC
USB Optical And Coaxial Inputs
RCA Output For Amplifiers And Speakers
Built-In Headphone Amplifier
Supports 16Ω To 200Ω Headphones
Bass And Treble Control
Can Be Used As Preamp Or Volume Controller
Compact Desktop Design

Compatibility
Windows XP W7 W8 W10
Mac And Linux Systems
Headphones 16Ω To 200Ω
Amplifiers And Powered Speakers

Specifications
Model: Q4
USB Input: 24Bit/96kHz
Optical/Coaxial Input: 24Bit/192kHz
Frequency Response: 20Hz-20kHz (±3dB)
Distortion: 0.01%
SNR: ≥105dB
Headphone Output Power: 100mW @32Ω
Headphone Impedance: 16Ω-200Ω
RCA Output Level: 2.3V
Power Supply: DC5V

Dimensions & Weight
Dimensions: 7.35 × 9.8 × 3.3 cm

In The Box
Fosi Audio DAC-Q4
5V USB Power Cable
PC-USB Cable
Optical Cable
User Manual