Fosi Audio Q4 front panel view with USB, optical, and coaxial inputs.
Fosi Audio Q4 back panel showing input and output connections.
Fosi Audio Q4 compact metal shell conveys sturdy desktop build.
Fosi Audio Q4 bass and treble knobs for sound tuning.
Fosi Audio Q4 supports 24-bit/192kHz high-resolution audio.
Fosi Audio Q4 USB and optical cables included for easy setup.
Fosi Audio Q4 RCA outputs connect to powered speakers.
Fosi Audio Q4 3.5mm headphone output for private listening.
Fosi Audio Q4 desktop DAC-amp is compact and reliable.

Fosi Audio

Fosi Audio Q4 DAC Headphone Amp – USB/Optical/Coaxial Desktop DAC for PC & Home Stereo

High-performance electronics accessories made for confident daily results

$97.51

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Why customers choose Nexoltic

Elevate your desktop audio with the Fosi Audio Q4

The Fosi Audio Q4 combines a compact DAC and headphone amplifier in a sturdy metal chassis, designed for versatile home and office setups. Its three digital inputs—USB, Optical, and Coaxial—feed a range of devices while delivering clean, detailed sound through 3.5mm headphone and RCA outputs. With low jitter and high-resolution support, it provides a refined listening experience without requiring complex setup.

Key capabilities adapt to your space and sources. The Q4 shines when connected to a PC for decisive gaming and media playback, a TV or DVD player for enhanced dialogue and ambience, or a compact desktop speaker system for a simple, clutter-free listening station. The full-metal shell and built-in protection circuits emphasize reliability in everyday use, from quiet evenings to occasional entertaining sessions.

What makes the Q4 a practical choice

  • Versatile Entry-Level: USB, Optical, and Coaxial inputs with RCA and 3.5mm outputs drive headphones from 16Ω to 200Ω and connect to speakers or amplifiers.
  • Plug-and-Play Convenience: No driver installation needed; compatible with TVs, computers, speaker systems, and DVD players for immediate HiFi-style audio.
  • Bass and Treble Controls: Adjustable knobs let you tailor tonal balance to suit content and room acoustics, with smooth volume control for precise listening.
  • Compact and High-Quality: A full-metal shell houses 24-bit/192kHz HD audio support with low jitter, plus an output protection circuit for safe operation.
  • Complete Accessories: Includes USB charging cable, optical cable, and PC-USB to Type-B cable for quick setup across devices. (Note: No microphone input.)

Practical setup ideas

  • Place the Q4 on a desktop near your computer to upgrade everyday listening and gaming audio.
  • Pair with a small home stereo or powered speakers for a compact streaming setup in living spaces.
  • Use the bass and treble controls to fine‑tune voice clarity when watching movies or listening to music.

FAQ

Q: What devices can I connect to the Fosi Audio Q4?

A: The Q4 accepts USB, Optical, and Coaxial inputs with 3.5mm and RCA outputs for PCs, TVs, and powered speakers.

Q: Is driver software required to use the Q4?

A: No drivers are needed; the Q4 is designed for plug-and-play use with compatible devices.

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