Transform your desktop and gaming audio with the Fosi Audio Q4. Combining a 24-bit/192kHz digital-to-analog converter, a Texas Instruments NE5532 headphone amplifier, dedicated bass and treble tone knobs, and versatile digital inputs, the Q4 brings high-definition clarity and tactile sound customization to active speakers and headphones.

Key Features

* High-Resolution 24-Bit/192kHz Decoding
Processes digital audio signals up to 24-bit/192kHz with low jitter, converting raw digital streams from computers, TVs, or consoles into clear analog sound.

* Dedicated Hardware Bass and Treble Controls
Fine-tune your soundstage with smooth physical bass and treble adjustment knobs, allowing you to boost low-end impact or elevate vocal clarity to suit different music genres, movies, and games.

* Texas Instruments NE5532 Op-Amp Architecture
Built around the classic TI NE5532 operational amplifier chip, delivering low distortion, low background noise floor, and clean driving capability for headphones ranging from 16 Ohms to 200 Ohms.

* Flexible Digital and Analog Connectivity
Features PC-USB, Optical, and Coaxial digital inputs alongside front-panel 3.5mm headphone output and rear L/R RCA line outputs for powered desktop speakers or external amplifiers.

* Plug and Play Driverless Operation
Requires no extra driver installation across Windows, macOS, iOS, Android, and Linux, operating as a instant external sound card for desktops, laptops, and gaming setups.

* All-Metal Compact Housing
Housed in a sturdy, heat-dissipating metallic chassis with metal control knobs, designed for long-term durability and protection against external electromagnetic interference.

What is in the Box

* 1 x Fosi Audio Q4 Desktop DAC Headphone Amplifier
* 1 x PC-USB Data Cable
* 1 x Optical Digital Cable
* 1 x USB Power Cable
* 1 x User Manual

Technical Specifications

* Op-Amp Chipset: Texas Instruments NE5532
* Supported Sampling Rates: 24-Bit / 192kHz (Optical and Coaxial), 24-Bit / 96kHz (PC-USB)
* Headphone Output Power: 160mW @ 32 Ohms
* Recommended Headphone Impedance: 16 Ohms to 200 Ohms
* Frequency Response: 20Hz - 20kHz (±3 dB)
* Signal-to-Noise Ratio: Greater than or equal to 105 dB
* Total Harmonic Distortion: Less than or equal to 0.01 percent
* Digital Inputs: PC-USB, Optical Digital, Coaxial Digital
* Analog Outputs: 3.5mm Headphone Jack, RCA L/R Line Out
* Power Supply: DC 5V via USB