--- product_id: 105003937 title: "A1 A-1 Hi-Fi Audio Mini Integrated Amplifier with Headphone Amplifier Vacuum Tube USED" brand: "qinpu" price: "$40.56" currency: USD in_stock: false reviews_count: 2 url: https://www.desertcart.us/products/105003937-a1-a-1-hi-fi-audio-mini-integrated-amplifier-headphone store_origin: US region: United States of America --- # Headphone Amp 50Hz-40kHz Range 2.5W Power A1 A-1 Hi-Fi Audio Mini Integrated Amplifier with Headphone Amplifier Vacuum Tube USED **Brand:** qinpu **Price:** $40.56 **Availability:** ❌ Out of Stock ## Summary > 🎶 Amplify Your Sound, Elevate Your Space! ## Quick Answers - **What is this?** A1 A-1 Hi-Fi Audio Mini Integrated Amplifier with Headphone Amplifier Vacuum Tube USED by qinpu - **How much does it cost?** $40.56 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/105003937-a1-a-1-hi-fi-audio-mini-integrated-amplifier-headphone) ## Best For - qinpu enthusiasts ## Why This Product - Trusted qinpu brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Stylish Design:** A sleek addition to your workspace that complements your modern aesthetic. - • **Tube Technology:** Experience the warm, rich sound of vacuum tubes for an audiophile's delight. - • **Compact Powerhouse:** Elevate your audio experience with a mini amplifier that packs a punch. - • **High-Fidelity Sound:** Enjoy crystal-clear audio with a frequency response that captures every detail. - • **Versatile Connectivity:** Seamlessly connect to your desktop or headphones for ultimate convenience. ## Overview The A1 A-1 Hi-Fi Audio Mini Integrated Amplifier is a compact yet powerful audio solution featuring a dual vacuum tube design, delivering 2 x 2.5W of output power. With a frequency response range of 50Hz to 40kHz, this amplifier ensures high-fidelity sound for both desktop speakers and headphones, making it a perfect fit for any audiophile's setup. ## Description Warm reminder: You should take about 100h time to operate the amp.RUN-IN the amp to get the best and stable sound. So during the first 100h the sound maybe is not the best, you can also use your own run-in method. Please note before purchase, the player and speakers and the shelf on the picture are not included. Features: It is a well-regulated process design, square and garden. The elements such as the grid are reasonably laid out on the cube, and the light blue light in the grid indicates that the machine is in working condition, and the night light is soft and quiet. A-1 Amplifier is a product of the main unit of Qinpu HIFI two-inch series speaker. The preamplifier 6N3J+TDA1517 rear stage combination, aluminum alloy body heat dissipation, the front stage double 6N3 electron tube, one for front end amplification, one Responsible for impedance matching Electric Performance Index Rated power: 2 x 2.5 W ( 8Ω RMS) Frequency Response: 50Hz-40kHz Input sensitivity: <500mV THD (Total Harmonic Distortion): <2% (1kHz) S/N Ratio: >85dB(A Weighted) Crosstalk Attenuation: >35dB Input Sensitivity: <220mV Overloading Level: >10V Input Impedance: 20kΩ Vacuum Tube: 6N3 x 2 Power Supply: 110-120V（±10%） /50Hz (For United States) If you need other voltages, please contact us first. AC100V- AC240V(60Hz/50Hz)(100V, 110V, 120V, 127V, 220V,240 version is in stock.) Power consumption: 20W Net Weight:: 1.4 kg Gross weight: 3 kg Product dimensions: (L x W x H)105mm x105mm x 110mm Packing Include: Full Set Tubes, An English operating instructions and Power Cord ## Features - MINI Desktop HI-FI Audio Integrated Amplifier ,it's also a Headphone Amplifier - Vacuum Tube: 6N3 x 2 - Rated power: 2 x 2.5 W ( 8Ω RMS) - Frequency Response: 50Hz-40kHz - Power Supply: 110-120V（±10%）50Hz ## Images ![A1 A-1 Hi-Fi Audio Mini Integrated Amplifier with Headphone Amplifier Vacuum Tube USED - Image 1](https://m.media-amazon.com/images/I/610qKrOqmVL.jpg) ![A1 A-1 Hi-Fi Audio Mini Integrated Amplifier with Headphone Amplifier Vacuum Tube USED - Image 2](https://m.media-amazon.com/images/I/61cbglly04L.jpg) ![A1 A-1 Hi-Fi Audio Mini Integrated Amplifier with Headphone Amplifier Vacuum Tube USED - Image 3](https://m.media-amazon.com/images/I/61kG36o+y7L.jpg) ![A1 A-1 Hi-Fi Audio Mini Integrated Amplifier with Headphone Amplifier Vacuum Tube USED - Image 4](https://m.media-amazon.com/images/I/61UtTcOCdRL.jpg) ![A1 A-1 Hi-Fi Audio Mini Integrated Amplifier with Headphone Amplifier Vacuum Tube USED - Image 5](https://m.media-amazon.com/images/I/61t6W+DY08L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Fun product *by T***Z on Reviewed in the United States on March 23, 2021* Great sound for the money when hooked up to properly efficient speakers ### ⭐⭐⭐⭐ 4.0 out of 5 stars Well built little amp *by J***M on Reviewed in the United States on February 1, 2020* Just received today and it's sitting next to my Qinpu A-3 amp and am using both as headphone amps. The little A-1 Mini is a heavy little guy, very solid and really cool to look at with the glowing blue lights behind the tubes. I've found the A-1 Mini to be different than the A-3 as the A-3 really rocks my AKG-702's whilst the A-1 Mini seems to power my Grado SR-125' along with my Audio-Technica AD-700's better than the 702's...those 2 needing a slightly less powerful amplifier than the AKG's. Now this A-1 Mini is just warming up and burning in and noticed the 100 hr burn in suggestion in the seller write up here on Amazon, but it sounds pretty darn good as new, so we'll see in a few days if any improvement happens. Maybe there will be a bit more clarity in the music after 100hrs, but it ain't bad now. I like how it looks and sounds with the right headphones (imho) that I have here. Also I have a pair of Triangle Titus XS speakers I am going to hook up to the A-1 Mini after a week or so of burn in. They are very efficient....we'll see ;-) --- ## 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/105003937-a1-a-1-hi-fi-audio-mini-integrated-amplifier-headphone](https://www.desertcart.us/products/105003937-a1-a-1-hi-fi-audio-mini-integrated-amplifier-headphone) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-04-27*