---
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: "$27.81"
currency: USD
in_stock: true
reviews_count: 3
category: "Tangxi"
url: https://www.desertcart.us/products/155004698-2-1-channel-power-amplifier-board-20w-bass-10w-sub
store_origin: US
region: United States of America
---

# 5V Supply Bluetooth 5.0 20W Power 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:** $27.81
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate Your Audio Game!

## 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?** $27.81 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/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

- • **Compact Design:** Perfectly sized at 1.97 x 1.97 x 0.47 inches for easy integration.
- • **Unleash the Sound:** Experience a powerful 20W output for immersive audio.
- • **Seamless Connectivity:** Bluetooth 5.0 ensures crystal-clear streaming from any device.
- • **Versatile Compatibility:** Connects effortlessly with MP3, MP4, computers, and mobile devices.
- • **Optimized for Performance:** Designed for 4Ω speakers to maximize sound quality.

## Overview

The 2.1 Channel Power Amplifier Board delivers a robust 20W output, featuring Bluetooth 5.0 for seamless audio streaming. Compact and efficient, it is designed for optimal performance with 4Ω speakers, making it an ideal choice for home theater and active speaker applications.

## 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 | #383,425 in Electronics ( See Top 100 in Electronics ) #2,208 in Audio Component Amplifiers |
| Brand Name | Tangxi |
| Customer Reviews | 3.7 3.7 out of 5 stars (14) |
| Item Dimensions | 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 |
| 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
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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-05-20*