--- product_id: 146629540 title: "Fosi Audio Q4 DAC Headphone Amp for PC, Desktop Digital to Analog Audio Converter for Home Stereo Amplifier and Powered Speakers, PC-USB/Optical/Coaxial Inputs, 3.5mm Headphone/RCA Outputs" brand: "fosi audio" price: "$241.06" currency: USD in_stock: true category: "Fosi Audio" url: https://www.desertcart.ec/products/146629540-fosi-audio-q4-dac-headphone-amp-for-pc-desktop-digital store_origin: EC region: Ecuador --- # 24-bit/192kHz HD audio USB/Optical/Coaxial inputs Bass & Treble adjustable knobs Fosi Audio Q4 DAC Headphone Amp for PC, Desktop Digital to Analog Audio Converter for Home Stereo Amplifier and Powered Speakers, PC-USB/Optical/Coaxial Inputs, 3.5mm Headphone/RCA Outputs **Brand:** fosi audio **Price:** $241.06 **Availability:** ✅ In Stock ## Summary > 🎧 Elevate your audio game—because your ears deserve the best. ## Quick Answers - **What is this?** Fosi Audio Q4 DAC Headphone Amp for PC, Desktop Digital to Analog Audio Converter for Home Stereo Amplifier and Powered Speakers, PC-USB/Optical/Coaxial Inputs, 3.5mm Headphone/RCA Outputs by fosi audio - **How much does it cost?** $241.06 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/146629540-fosi-audio-q4-dac-headphone-amp-for-pc-desktop-digital) ## Best For - fosi audio enthusiasts ## Why This Product - Trusted fosi audio brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Ready Out-of-the-Box:** Comes with all essential cables for instant setup—no drivers, no hassle, just pure sound. - • **Compact Powerhouse Design:** Sleek full-metal chassis fits perfectly on any desk, combining durability with style. - • **Customizable Audio Experience:** Dedicated bass and treble controls let you tailor sound to your exact preference. - • **Audiophile-Grade Sound Precision:** Supports high-resolution 24-bit/192kHz audio ensuring crystal-clear, immersive listening. - • **Seamless Multi-Source Connectivity:** Plug-and-play USB, Optical, and Coaxial inputs for effortless integration with all your devices. ## Overview The Fosi Audio Q4 is a compact, entry-level DAC and headphone amplifier designed for professionals seeking high-fidelity sound. Featuring versatile USB, Optical, and Coaxial inputs, it supports 24-bit/192kHz HD audio and drives headphones from 16Ω to 200Ω. With adjustable bass and treble controls housed in a premium metal shell, it delivers customizable, crystal-clear audio for desktop, home stereo, and powered speaker setups—all with plug-and-play convenience and included cables for immediate use. ## Description Buy Fosi Audio Q4 DAC Headphone Amp for PC, Desktop Digital to Analog Audio Converter for Home Stereo Amplifier and Powered Speakers, PC-USB/Optical/Coaxial Inputs, 3.5mm Headphone/RCA Outputs: Amplifiers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases ## Features - Versatile Entry-Level: The Fosi Audio Q4 is an entry-level DAC and headphone amp, featuring USB, Optical, and Coaxial inputs, plus RCA and 3.5mm outputs. It drives headphones from 16Ω to 200Ω, enhances audio quality, and connects to speakers or amplifiers - Plug-and-Play Convenience: Instant HiFi audio with no driver installation. Connect to TVs, computers, speaker systems, or DVD players. Compact design fits anywhere, offering ultimate audio freedom - Bass and Treble Controls: Adjustable bass and treble knobs for fine-tuning sound. Natural feel with smooth volume adjustment. High-quality metal knobs for a premium experience. Optimize audio for any source - Compact and High-Quality: Compact DAC converter with full metallic shell. Supports 24-bit/192kHz HD audio with low jitter. Includes output protection circuit for system safety - Complete Accessories: Includes USB charging cable, optical cable, and PC-USB to Type-B cable. Ensures hassle-free setup and immediate use. Seamless connectivity for various devices. (Note: No microphone input.) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07VDQQY95 | | Audio Output Mode | Stereo | | Best Sellers Rank | #7,253 in Electronics ( See Top 100 in Electronics ) #7 in Headphone Amps #28 in Audio Component Amplifiers | | Brand | Fosi Audio | | Brand Name | Fosi Audio | | Compatible Devices | Amplifier, Headphone, Speaker, Television | | Customer Reviews | 4.4 out of 5 stars 3,343 Reviews | | Included Components | User Guide | | Interface | Coaxial, Optical, USB | | Interface Type | Coaxial, Optical, USB | | Item Dimensions L x W | 3.9"L x 2.9"W | | Item Weight | 430 g | | Manufacturer | Fosi Audio | | Material Type | Metal | | Maximum Supply Voltage | 5 volts_of_direct_current | | Minimum Supply Voltage | 5 volts_of_direct_current | | Model | Q4 | | Mounting Type | Tabletop Mount | | Number of Channels | 1 | | Number of Items | 1 | | Number of Pins | 11 | | Part Number | Q4 | | Unit Count | 1 Count | | Warranty Description | 24-month warranty | ## Product Details - **Brand:** Fosi Audio - **Maximum Supply Voltage:** 5 volts_of_direct_current - **Minimum Supply Voltage:** 5 volts_of_direct_current - **Mounting Type:** Tabletop Mount - **Number of Pins:** 11 ## Images ![Fosi Audio Q4 DAC Headphone Amp for PC, Desktop Digital to Analog Audio Converter for Home Stereo Amplifier and Powered Speakers, PC-USB/Optical/Coaxial Inputs, 3.5mm Headphone/RCA Outputs - Image 1](https://m.media-amazon.com/images/I/51ahAHhZF6L.jpg) ![Fosi Audio Q4 DAC Headphone Amp for PC, Desktop Digital to Analog Audio Converter for Home Stereo Amplifier and Powered Speakers, PC-USB/Optical/Coaxial Inputs, 3.5mm Headphone/RCA Outputs - Image 2](https://m.media-amazon.com/images/I/81FruhStl+L.jpg) ![Fosi Audio Q4 DAC Headphone Amp for PC, Desktop Digital to Analog Audio Converter for Home Stereo Amplifier and Powered Speakers, PC-USB/Optical/Coaxial Inputs, 3.5mm Headphone/RCA Outputs - Image 3](https://m.media-amazon.com/images/I/71dh4m7FtZL.jpg) ![Fosi Audio Q4 DAC Headphone Amp for PC, Desktop Digital to Analog Audio Converter for Home Stereo Amplifier and Powered Speakers, PC-USB/Optical/Coaxial Inputs, 3.5mm Headphone/RCA Outputs - Image 4](https://m.media-amazon.com/images/I/71vJ9xrjYyL.jpg) ![Fosi Audio Q4 DAC Headphone Amp for PC, Desktop Digital to Analog Audio Converter for Home Stereo Amplifier and Powered Speakers, PC-USB/Optical/Coaxial Inputs, 3.5mm Headphone/RCA Outputs - Image 5](https://m.media-amazon.com/images/I/71lgtFJ6OEL.jpg) ## Questions & Answers **Q: Can Q4 output analog stereo audio through both the 3.5mm headphone jack and the RCA red/white jacks at the same time?** A: Q4 will mute the RCA output when headphones are plugged in. **Q: How do I connect Q4 to my computer with USB input?** A: Your other USB cables must support OTG function. -For iPhone: Use a USB B to Lightning OTG Cable. -For Android: Use a USB B to TYPE C Cable. **Q: Where is the 0db position (Q4)?** A: The 0db position is at 12 o'clock on the knob. **Q: Does Q4 support PS5?** A: Yes, it supports PS5. **Q: Can RCA output be connected to a soundbar (e.g., AUX input) (Q4)?** A: Yes, it can work. ## Frequently Bought Together - Fosi Audio Q4 Desktop DAC Headphone Amp for PC Mini Stereo Headphone Amplifier Combo USB Optical Coaxial to RCA AUX Digital-to-Analog Audio Converter Adapter for Home Powered Speakers - Sennheiser HD 560 S Over-The-Ear Audiophile Headphones - Neutral Frequency Response, E.A.R. Technology for Wide Sound Field, Open-Back Earcups, Detachable Cable, (Black) (HD 560S) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ec/products/146629540-fosi-audio-q4-dac-headphone-amp-for-pc-desktop-digital](https://www.desertcart.ec/products/146629540-fosi-audio-q4-dac-headphone-amp-for-pc-desktop-digital) --- *Product available on Desertcart Ecuador* *Store origin: EC* *Last updated: 2026-09-15*