--- product_id: 155004698 title: "2.1 Channel Power Amplifier Board, 20W (Bass 10W & Sub Box 10W (5W x 2) Bluetooth 5.0 5V Digital AMP Board Module for Home Theater & Active Speaker Applications" brand: "tangxi" price: "¥4561" currency: JPY in_stock: true reviews_count: 3 category: "Tangxi" url: https://www.desertcart.jp/products/155004698-2-1-channel-power-amplifier-board-20w-bass-10w-sub store_origin: JP region: Japan --- # 5V 3A stable power supply 20W max output power Bluetooth 5.0 wireless tech 2.1 Channel Power Amplifier Board, 20W (Bass 10W & Sub Box 10W (5W x 2) Bluetooth 5.0 5V Digital AMP Board Module for Home Theater & Active Speaker Applications **Brand:** tangxi **Price:** ¥4561 **Availability:** ✅ In Stock ## Summary > 🎶 Power Your Sound, Own the Room! ## Quick Answers - **What is this?** 2.1 Channel Power Amplifier Board, 20W (Bass 10W & Sub Box 10W (5W x 2) Bluetooth 5.0 5V Digital AMP Board Module for Home Theater & Active Speaker Applications by tangxi - **How much does it cost?** ¥4561 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/155004698-2-1-channel-power-amplifier-board-20w-bass-10w-sub) ## Best For - tangxi enthusiasts ## Why This Product - Trusted tangxi brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Room-Filling 20W Power:** Experience immersive sound with 10W bass and dual 5W satellite channels, perfect for home theaters and active speakers. - • **Compact & Versatile Design:** Ultra-compact 1.97” square module fits discreetly inside speaker cabinets or custom builds without clutter. - • **Optimized Speaker Compatibility:** Designed for 4Ω full-range satellites and 3-4Ω woofers to deliver crisp highs and punchy lows without distortion. - • **Plug & Play with Multiple Sources:** Supports MP3, MP4, PC, and mobile inputs—turn any passive speaker setup into a wireless powerhouse in minutes. - • **Seamless Bluetooth 5.0 Connectivity:** Effortlessly stream high-quality audio from any device with the latest Bluetooth standard for stable, low-latency playback. ## Overview The Tangxi 2.1 Channel Power Amplifier Board delivers a robust 20W output (10W bass + 5W x 2 satellites) powered by Bluetooth 5.0 and a 5V/3A supply. Its compact footprint and optimized speaker compatibility make it ideal for upgrading passive speakers into active home theater systems with wireless streaming capabilities. ## Description Specification: Bluetooth: 5.0 Power supply: DC voltage 5V (4.8-5V), current should be 2.5A-3A or more Maximum power: 20W Package weight: approx. 29g Package list: 1 * Module 3 * Connection Cable Review: Legitimate so far! - I used this to convert some bookshelf speakers into active speakers. It tucked into the inside of one of the cabinets easily with the knobs poking out the back. Delivers plenty of volume for the whole room. It's connected to a passive subwoofer, even with the subwoofer output turned halfway up, has lots of punch. Connected to usb power from a computer monitor which gave a lot of feedback - I just had to plug in a ground loop in the input to fix that. I could do without the flashing blue light when it's on or the loud beeps when it turns on. Review: Not the best that I've had. - This one is the 3rd of this model, and like the others, it died. I have a quantity of these types of boards, and I know what I'm doing. These don't hold up but for a few moments. I'm thinking that they don't like 4 ohm speakers, spite what they list in description. They didn't get hot, just died. All the same way. ## Features - This power amplifier board is powered by Bluetooth 5.0 5V 3A. After secondary development by peripheral hardware, the maximum power can be configured to reach 20W: Bass 10W + sub-box 10W (5W * 2) - Therefore, this power amplifier board has strict requirements on the power supply and the speaker, especially the woofer - (Satellite) left and right channel sub-box speaker: select 4 Ω / 5W full-range speaker. (Please use 4 Ω and 3W for USB power supply) - Woofer: Choose 3 - 4 Ω 10W-15W Woofer. Never use 6 Ω or 8 Ω woofer. (Please select 4 Ω 5W for USB power supply) - Audio source: optional MP3, MP4, computer, PC, mobile phone, etc. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07RWYM7V7 | | Best Sellers Rank | #330,443 in Electronics ( See Top 100 in Electronics ) #1,882 in Audio Component Amplifiers | | Brand | Tangxi | | Brand Name | Tangxi | | Customer Reviews | 3.7 out of 5 stars 14 Reviews | | Item Dimensions | 1.97 x 1.97 x 0.47 inches | | Item dimensions L x W x H | 1.97 x 1.97 x 0.47 inches | | Manufacturer | Tangxi | | Model | Tangxiyg274v9h3u | | Mounting Type | Surface Mount | | Number of Channels | 3 | | Output Power | 20 Watts | | Part Number | Tangxiyg274v9h3u | | UPC | 749249441082 | | Voltage | 5 Volts | ## Product Details - **Brand:** Tangxi - **Item dimensions L x W x H:** 1.97 x 1.97 x 0.47 inches - **Manufacturer:** Tangxi - **Mounting Type:** Surface Mount - **Voltage:** 5 Volts ## Images ![2.1 Channel Power Amplifier Board, 20W (Bass 10W & Sub Box 10W (5W x 2) Bluetooth 5.0 5V Digital AMP Board Module for Home Theater & Active Speaker Applications - Image 1](https://m.media-amazon.com/images/I/61jk5M2KttL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐ Legitimate so far! *by M***T on April 29, 2022* I used this to convert some bookshelf speakers into active speakers. It tucked into the inside of one of the cabinets easily with the knobs poking out the back. Delivers plenty of volume for the whole room. It's connected to a passive subwoofer, even with the subwoofer output turned halfway up, has lots of punch. Connected to usb power from a computer monitor which gave a lot of feedback - I just had to plug in a ground loop in the input to fix that. I could do without the flashing blue light when it's on or the loud beeps when it turns on. ### ⭐⭐ Not the best that I've had. *by M***P on June 6, 2020* This one is the 3rd of this model, and like the others, it died. I have a quantity of these types of boards, and I know what I'm doing. These don't hold up but for a few moments. I'm thinking that they don't like 4 ohm speakers, spite what they list in description. They didn't get hot, just died. All the same way. ### ⭐ Bluetooth connection! *by J***. on March 14, 2021* It disconnects 3 secons after the audio stops. Maybe more than 3 seconds or less, but it feels like it immediately disconnects after the songs finishes playing. ## Frequently Bought Together - 2.1 Channel Power Amplifier Board, 20W (Bass 10W & Sub Box 10W (5W x 2) Bluetooth 5.0 5V Digital AMP Board Module for Home Theater & Active Speaker Applications - Gikfun 4Ohm 5W Full Range Audio Speaker Stereo Woofer Loudspeaker for Arduino Replacement (Pack of 2pcs) EK1949 - Gikfun 2" 4Ohm 3W Full Range Audio Speaker Stereo Woofer Loudspeaker for Arduino (Pack of 2pcs) EK1725 --- ## 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.jp/products/155004698-2-1-channel-power-amplifier-board-20w-bass-10w-sub](https://www.desertcart.jp/products/155004698-2-1-channel-power-amplifier-board-20w-bass-10w-sub) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-07-11*