Desktop DAC and headphone amplifier aimed at improving PC and powered-speaker sound quality. Clean, controlled audio and tactile tone controls suit gamers and listeners after a straightforward upgrade with the compact, metal-chassis Fosi Audio Q4 Headphone Amplifier. Is this the practical step up for a modest desktop setup?
⚡ At a Glance
- • Sound Signature: Clean, neutral presentation with controlled bass and clear treble
- • Best for: Desktop listeners, gamers and casual audiophiles wanting better detail
- • Not ideal for: Users requiring wireless streaming or integrated hands-free controls
Compact DAC and headphone amplifier that converts optical, coaxial and PC-USB signals to analogue RCA and 3.5mm outputs. Powers 16–200Ω headphones and supports up to 24bit/192kHz playback, with USB limited to 24bit/96kHz.
Cleaner, more detailed playback, with NE5532 operational amplifiers
NE5532 op-amp chips from Texas Instruments supply low noise, high output-drive capability, low distortion and high slew rate. The circuitry focuses on reducing jitter and preserving dynamic detail.
Improved clarity and instrument separation helps songs and game audio sound more precise, especially on midrange-focused headphones and powered speakers.
Flexible source routing, with optical, coaxial and PC-USB inputs
Digital inputs accept optical, coaxial and PC-USB (Type B) signals and convert them to analogue RCA and 3.5mm headphone output. The unit streams bit-perfect 24bit/192kHz for compatible inputs and 24bit/96kHz over USB.
Easy connection to PCs, consoles and set-top boxes without extra converters, letting existing systems gain improved digital-to-analogue conversion quickly.
Quick tone adjustment on the fly, with tactile bass and treble controls
Physical bass and treble knobs provide clicky tactile feedback for immediate equalisation changes, while an output protection circuit guards attached speakers and headphones. The compact metal shell reduces electrical interference.
Swiftly tailor the sound to different headphones or content without software, useful for gaming, films and varied music styles.
✨ The 4 Key Reasons for Fosi Audio Q4 Headphone Amplifier
- 160mW RMS Output - Drives 32Ω headphones with 160mW RMS for sustained loudness.
- Wide Impedance Range - Supports 16–200Ω headphones, suitable for many consumer and reference cans.
- High-resolution Playback - Streams up to 24bit/192kHz for improved detail and imaging.
- Sturdy Metal Chassis - Compact metal shell reduces vibration and fits neatly on a desk.
📋 Technical Details at a Glance
- Category: Wireless
- Product Type: Headphone Amplifier DAC Converter
- Model: Q4
- Inputs: Optical, Coaxial, PC-USB (Type B)
- Outputs: RCA analogue, 3.5mm headphone jack
❓ Frequently Asked Questions
Q: Will the amplifier work with a PC or Mac?
A: Plug-and-play operation requires no special drivers, and connections include PC-USB (Type B), optical and coaxial inputs for easy pairing with computers.
Q: Can it power my headphones?
A: Rated to drive headphones from 16Ω to 200Ω, with an output of 160mW RMS at 32Ω, suitable for many consumer and semi-professional cans.
Q: Does it support high-resolution audio files?
A: Digital playback supports up to 24bit/192kHz for compatible inputs, while USB input is limited to 24bit/96kHz.
🏆 Our Verdict
The Fosi Audio Q4 Headphone Amplifier suits desktop listeners, gamers and casual audiophiles seeking a compact DAC and amp upgrade. NE5532 op-amps, flexible digital inputs and tactile tone controls deliver cleaner playback and quick sound shaping. Although not the cheapest option, the solid metal build, included cables and 24-month warranty make it a sensible long-term desktop upgrade.
