--- product_id: 727961240 title: "Upgraded Version Douk Audio U3 Headamp, Mini Class A HiFi Headphone Amplifier Desktop Home Stereo Amplifier DC5V" brand: "douk audio" price: "11821 som" currency: KGS in_stock: true category: "Douk Audio" url: https://www.desertcart.kg/products/727961240-upgraded-version-douk-audio-u3-headamp-mini-class-a-hifi store_origin: KG region: Kyrgyzstan --- # 1300mA Class A current output Drives 18-600Ω high-impedance headphones Wide 5-20V input voltage Upgraded Version Douk Audio U3 Headamp, Mini Class A HiFi Headphone Amplifier Desktop Home Stereo Amplifier DC5V **Brand:** douk audio **Price:** 11821 som **Availability:** ✅ In Stock ## Summary > 🎶 Elevate your audio game with pure Class A power — don’t just listen, experience! ## Quick Answers - **What is this?** Upgraded Version Douk Audio U3 Headamp, Mini Class A HiFi Headphone Amplifier Desktop Home Stereo Amplifier DC5V by douk audio - **How much does it cost?** 11821 som with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/727961240-upgraded-version-douk-audio-u3-headamp-mini-class-a-hifi) ## Best For - douk audio enthusiasts ## Why This Product - Trusted douk audio brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Pure Class A Warmth:** Experience ultra-low distortion and rich, delicate sound with the original TI-NE5532 opamp and high-current transistor design. - • **Powerful Headphone Drive:** Effortlessly power high-impedance headphones like HD600, K702, and DT880 with 1300mW output at 32Ω. - • **Compact Desktop Essential:** Sleek, space-saving design (2.6 x 3.7 x 1.2 inches) perfect for your home stereo or professional setup. - • **Plug & Play Opamp Upgrade:** Easily customize your sound signature with a plug-in opamp socket for endless sonic possibilities. - • **Universal Voltage Flexibility:** Operate seamlessly from 5V to 20V DC, ensuring stable high-voltage amplification and minimal background noise. ## Overview The Douk Audio U3 is a mini Class A headphone amplifier featuring a TI-NE5532 opamp and a 1300mA high-current transistor circuit. It supports a wide DC input range (5-20V), drives headphones with impedance from 18 to 600Ω, and delivers ultra-low distortion with a warm, detailed sound. Its plug-in opamp socket allows easy upgrades, making it a versatile desktop amplifier for audiophiles and professionals seeking premium sound quality in a compact form. ## Description Audio Input: Stereo L/R RCA Audio output: 6.35mm headphone jack (with 6.35mm to 3.5mm adapter) Output power:? 1300mW (32Ω) Matched headphone impedance: 18-600Ω Frequency response: 20-30KHz Signal-to-Noise Ratio:? 110DB Maximum Output Amplifier Voltage: 25V Input Voltage: DC 5-20V Dimensions (W x D x H): 2.6 x 3.7 x 1.2 inches (67 x 93 x 30 Net Weight: 169g Package weight: 210g Package Contents 1 x U3 Headphone Amplifier 1 x USB to DC cable 1 x 6.35mm-3.5mm headphone adapter ## Features - Adopts the original TI-NE5532 classic operator amplifier and transistor expansion current circuit, using 1300mA high-current output transistor operating in Class A status, ultra-low distortion, the sound is warm and delicate - Innovative circuit design, DC 5-20V wide input operating voltage, the amplifier circuit always works at 26V high voltage, and the background noise index is excellent - Plug-in operational amp socket design Can upgrade a variety of operational amps - Strong driving power makes it easy to drive most high impedance headphones, such as: HD580 / HD600 / HD650 K701 / K702 / Q701 DT880 / T70 / T90 SR225 / SR325 / RS1e - Note: The power adapter is not included. Recommend using original high quality power adapter over 5W For example, if you use DC 5V, the current must be at least 1A. If you use DC 12V power adapter, you need more than 0.5A ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08C2MKBGN | | Amazon Bestseller | #84,294 in Electronics ( See Top 100 in Electronics ) #149 in Headphone Amps | | Brand Name | Douk Audio | | Customer Reviews | 4.4 4.4 out of 5 stars (785) | | Item Weight | 0.37 Pounds | | Manufacturer | Douk Audio | | Model | XZ-U3 | | Number of Channels | 2 | | Part Number | XZ-U3 | ## Product Details - **Brand:** Douk Audio - **Manufacturer:** Douk Audio - **Number of Channels:** 2 ## Images ![Upgraded Version Douk Audio U3 Headamp, Mini Class A HiFi Headphone Amplifier Desktop Home Stereo Amplifier DC5V - Image 1](https://m.media-amazon.com/images/I/61IlgJ78P8L.jpg) ![Upgraded Version Douk Audio U3 Headamp, Mini Class A HiFi Headphone Amplifier Desktop Home Stereo Amplifier DC5V - Image 2](https://m.media-amazon.com/images/I/61R3WL86tAL.jpg) ![Upgraded Version Douk Audio U3 Headamp, Mini Class A HiFi Headphone Amplifier Desktop Home Stereo Amplifier DC5V - Image 3](https://m.media-amazon.com/images/I/71tuAg4wunL.jpg) ![Upgraded Version Douk Audio U3 Headamp, Mini Class A HiFi Headphone Amplifier Desktop Home Stereo Amplifier DC5V - Image 4](https://m.media-amazon.com/images/I/61qeqDSf97L.jpg) ![Upgraded Version Douk Audio U3 Headamp, Mini Class A HiFi Headphone Amplifier Desktop Home Stereo Amplifier DC5V - Image 5](https://m.media-amazon.com/images/I/61lU2HWzByL.jpg) ## Questions & Answers **Q: What is the advantage or disadvantage of using a power supply voltage higher than the 5v you get through the usb to dc cable?** A: The USB power plug included, when plugged into the PC directly just have an overwhelming hiss. The hiss left when I used a 1A 5V USB charger, but the best sound came when I found an old large "wall-wart" 12V 1A with the same plug. The jump from 5V to 12V added a lot of warmth and detail. Get the linear supply wall-worts, not the switching kind (generally smaller in form-factor). I also used ferrite snap-on cores on the audio from the pc, high quality shielded audio cables. I'm most pleased with this unit when it's properly powered. **Q: Is this a decent headphone amp for a turntable that has a built in pre amp?** A: Signal source is irrelevant as long as it is a low impedance line level. **Q: Can someone post a link to a good DC power adapter for this sold on Amazon?** A: When I purchased this item recently from Amazon, I had a similar concern about the power supply, because I live in a 220V 50Hz electric supply zone. In my case, I received the amplifier with a charging cable having a standard (I think) plug on one end and a USB A plug on the other end. This end can be plugged into any phone charger with a USB A port. I found the amplifier works very well if this is also plugged in the USB port on the computer. **Q: How do I pick another power supply for this? I’d like to replace it but don’t know how to figure out if something will work with this.** A: I’m using a Radio Shack 12volt 1000ma power adapter. It comes with different tip sizes so I used one that fit and that had a positive center like shown printed on the back (near the receptacle) of the amp. The range required of the Douk is 5 volts to 20 volts so mine being 12 volts is good. In the reviews someone commented that they had issues with using 5 volt chargers. That’s why I went with a little more power. Check your manual in case they made changes to this unit since the time bought it( earlier this year) ## Frequently Bought Together - Douk Audio U3 Headphone Amps, Mini Hi-Fi Amplifier for Home Desktop PC 6.35mm / 3.5mm Headsets, Class A, RCA Input, DC 5V - Amazon Basics 3.5mm Stereo Aux to 2 x RCA Audio Cable Adapters, 4 Feet/1.2 m, for Connecting Amplifiers, Speakers, with Gold-Plated Plugs, Black - UGREEN 3.5mm to RCA Cable, 6.6FT RCA Male to Aux Audio Adapter HiFi Sound Headphone Jack Adapter Metal Shell Y Splitter Auxiliary Cord 1/8 Connector for Phone Speaker MP3 Tablet HDTV --- ## 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.kg/products/727961240-upgraded-version-douk-audio-u3-headamp-mini-class-a-hifi](https://www.desertcart.kg/products/727961240-upgraded-version-douk-audio-u3-headamp-mini-class-a-hifi) --- *Product available on Desertcart Kyrgyzstan* *Store origin: KG* *Last updated: 2026-05-16*