---
product_id: 540778617
title: "Audio Amplifier Module ZK-MT21 2.1 Channel Bluetooth Digital Power Amplifier Board"
brand: "wangcl"
price: "Bs.318"
currency: BOB
in_stock: true
reviews_count: 9
category: "Wangcl"
url: https://www.desertcart.bo/products/540778617-audio-amplifier-module-zk-mt21-2-1-channel-bluetooth-digital
store_origin: BO
region: Bolivia
---

# Max Output Power 2x50W+100W Wide Voltage Range 12-24V Multi-layer Protection System Audio Amplifier Module ZK-MT21 2.1 Channel Bluetooth Digital Power Amplifier Board

**Brand:** wangcl
**Price:** Bs.318
**Availability:** ✅ In Stock

## Summary

> 🔊 Elevate your sound game—because your ears deserve the best.

## Quick Answers

- **What is this?** Audio Amplifier Module ZK-MT21 2.1 Channel Bluetooth Digital Power Amplifier Board by wangcl
- **How much does it cost?** Bs.318 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.bo](https://www.desertcart.bo/products/540778617-audio-amplifier-module-zk-mt21-2-1-channel-bluetooth-digital)

## Best For

- wangcl enthusiasts

## Why This Product

- Trusted wangcl brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Copper DC connectors and fence-type terminals ensure zero heat damage and reliable high-current endurance.
- • **Compact & Versatile:** Miniature 9.4x9x2.2 cm form factor fits effortlessly into any DIY or professional audio project.
- • **Fail-Safe Protection:** Overheat, reverse polarity, over-voltage, and under-voltage safeguards keep your setup safe and sound.
- • **Powerhouse Performance:** Delivers crisp, room-filling sound with 2.1 channel 200W max output—your home theater’s new heartbeat.
- • **Seamless Wireless Connectivity:** Bluetooth 5.0 integration with enhanced antenna design for stable, interference-free streaming.

## Overview

The ZK-MT21 is a compact 2.1 channel Bluetooth 5.0 digital amplifier board delivering up to 200W peak power. Engineered with robust multi-protection features and premium copper connectors, it ensures reliable, high-quality audio performance for home theaters, store speakers, and DIY projects. Its wide voltage compatibility and advanced antenna design guarantee stable wireless streaming and long-term durability.

## Description

Audio Amplifier Module ZK-MT21 2.1 Channel Bluetooth Digital Power Amplifier Board Product Description: This amp board has overheat, reverse, circuit, over-voltage and under-voltage protection to prevent complete failure. This can be mini amplifier board widely used in store solicitation, home theater, square speakers, etc.due to its excellent performance. Adopts copper DC connector and fence type terminal, which can withstand large current, no heat, no damage to the wire. Audio power amplifier with antenna and antenna base, the signal is better, the efficiency is high, and the anti-interference ability is strong. The wireless 5.0 digital amplifier board is operated by wide working voltage 12-24V, max output power 2X50W+100W. Specification: Color: As Pic Shown Size: 9.4x9x2.2 cm/3.70x3.54x0.87 inch Model: ZK-MT21 Wireless Version: 5.0 Audio Input: AUX + Wireless Channel: 2.1 Input sensitivity: 500mV Adaption Supply Voltage: 12-24V / 5A above Speaker: 20-100W, 4-8Ohm Packing List: 1 * Audio amplifier module (not assembled)

Review: Real Deal | Great Sound and Easy to DIY. - I modified an old Logitech computer speaker and paired with Xiaomi TV Box and it sound amazing. I just don't really know how long it will last. But as far as the sound is concern, this is real.
Review: Good sound and enough bass - Value of money 👍

## Features

- This amp board has overheat, reverse, circuit, over-voltage and under-voltage protection to prevent complete failure.
- This can be mini amplifier board widely used in store solicitation, home theater, square speakers, etc.due to its excellent performance.
- Adopts copper DC connector and fence type terminal, which can withstand large current, no heat, no damage to the wire.
- Audio power amplifier with antenna and antenna base, the signal is better, the efficiency is high, and the anti-interference ability is strong.
- The wireless 5.0 digital amplifier board is operated by wide working voltage 12-24V, max output power 2X50W+100W.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09SL33VYD |
| Item model number | ZK-MT21 |
| Manufacturer | WANGCL |
| Package Dimensions | 13.5 x 11.1 x 5.4 cm; 180 g |

## Product Details

- **Manufacturer:** WANGCL
- **Maximum supply voltage:** 24 Volts
- **Minimum supply voltage:** 12 Volts (DC)
- **Mounting type:** Surface Mount
- **Voltage:** 24 Volts

## Images

![Audio Amplifier Module ZK-MT21 2.1 Channel Bluetooth Digital Power Amplifier Board - Image 1](https://m.media-amazon.com/images/I/51aLfHDx9eL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Real Deal | Great Sound and Easy to DIY.
*by F***L on 21 February 2025*

I modified an old Logitech computer speaker and paired with Xiaomi TV Box and it sound amazing. I just don't really know how long it will last. But as far as the sound is concern, this is real.

### ⭐⭐⭐⭐ Good sound and enough bass
*by S***. on 6 March 2025*

Value of money 👍

### ⭐ Fake wattage ratings
*by A***S on 20 March 2025*

The chip advertises 2x50W and a 100W sub output at 4-8ohms but only outputs around 10W at 4ohms powered with 24v DC on the subwoofer output which is much lower than the advertised 100W. The 2x50W channels also have no bass and lower output at around 4W/channel. The Bluetooth is very laggy and pops often. The ic inside is a CS8673E which can barely output 20W at 4ohms with 10% distortion which is very high. Product not as advertised.

## Frequently Bought Together

- WANGCL Audio Amplifier Module ZK-MT21 2.1 Channel Bluetooth Digital Power Amplifier Board
- electrosmart 10m Red/Black 2x 1mm 2x 89 Strand Speaker Cable Wire for Home HiFi/Car Audio etc
- 24V 6A DC Power Supply Adapter AC 100V~240V to DC 24 Volt 6 Amp 144W Converter Transformer 5.5x2.1mm Plug for LED Strip Light 3D Printer LED Driver LCD Monitor,Wireless Router,Security Cameras

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**Shop now:** [https://www.desertcart.bo/products/540778617-audio-amplifier-module-zk-mt21-2-1-channel-bluetooth-digital](https://www.desertcart.bo/products/540778617-audio-amplifier-module-zk-mt21-2-1-channel-bluetooth-digital)

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*Product available on Desertcart Bolivia*
*Store origin: BO*
*Last updated: 2026-02-20*