--- product_id: 146629540 title: "Q4" brand: "fosi audio" price: "$160.65" currency: USD in_stock: true category: "Fosi Audio" url: https://www.desertcart.us/products/146629540-q4 store_origin: US region: United States of America --- # Drives 16Ω-200Ω headphones 24-bit/192kHz HD audio USB/Optical/Coaxial inputs Q4 **Brand:** fosi audio **Price:** $160.65 **Availability:** ✅ In Stock ## Summary > 🎶 Elevate your sound game—because your ears deserve the best. ## Quick Answers - **What is this?** Q4 by fosi audio - **How much does it cost?** $160.65 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/146629540-q4) ## 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 - • **Compact Powerhouse:** Sleek, full-metal chassis packs high-res 24-bit/192kHz audio and low jitter into a space-saving design. - • **Ready Out of the Box:** Includes all essential cables for quick setup—start elevating your audio experience immediately. - • **Tailor Your Audio Experience:** Precision bass and treble controls with premium metal knobs let you customize your sound signature. - • **HiFi Sound Without the Hassle:** Plug-and-play design delivers pristine audio instantly—no drivers, no delays. - • **Seamless Multi-Source Connectivity:** Effortlessly switch between USB, Optical, and Coaxial inputs for ultimate audio flexibility. ## Overview The Fosi Audio Q4 is a compact, entry-level DAC and headphone amplifier designed for professionals seeking high-fidelity audio enhancement. Supporting USB, Optical, and Coaxial inputs, it drives headphones from 16Ω to 200Ω and outputs via 3.5mm and RCA. With 24-bit/192kHz resolution, adjustable bass and treble, and a durable metal build, it offers plug-and-play convenience and versatile connectivity for desktop and home stereo setups. ## 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 | #7,381 in Electronics ( See Top 100 in Electronics ) #8 in Headphone Amps #31 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 ![Q4 - Image 1](https://m.media-amazon.com/images/I/51ahAHhZF6L.jpg) ![Q4 - Image 2](https://m.media-amazon.com/images/I/81FruhStl+L.jpg) ![Q4 - Image 3](https://m.media-amazon.com/images/I/71dh4m7FtZL.jpg) ![Q4 - Image 4](https://m.media-amazon.com/images/I/71vJ9xrjYyL.jpg) ![Q4 - 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.us/products/146629540-q4](https://www.desertcart.us/products/146629540-q4) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-09-14*