---
product_id: 664937454
title: "Bluetooth 5.0 Audio Amplifier Board, ZK-MT21 2.1 Channel 50W X 2 +100W Mini Subwoofer Power Amp HiFi Digital Audio Amp Module for Home Speakers(20-100W, 4-8¦¸), DC 12-24V, BT AUX Input"
brand: "arrarown"
price: "€ 49.72"
currency: EUR
in_stock: true
reviews_count: 5
category: "Arrarown"
url: https://www.desertcart.nl/products/664937454-bluetooth-5-0-audio-amplifier-board-zk-mt21-2-1
store_origin: NL
region: Netherlands
---

# Bluetooth 5.0 with 49ft range 200W total output power Independent treble & bass control Bluetooth 5.0 Audio Amplifier Board, ZK-MT21 2.1 Channel 50W X 2 +100W Mini Subwoofer Power Amp HiFi Digital Audio Amp Module for Home Speakers(20-100W, 4-8¦¸), DC 12-24V, BT AUX Input

**Brand:** arrarown
**Price:** € 49.72
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate your sound game—because your speakers deserve a power boost!

## Quick Answers

- **What is this?** Bluetooth 5.0 Audio Amplifier Board, ZK-MT21 2.1 Channel 50W X 2 +100W Mini Subwoofer Power Amp HiFi Digital Audio Amp Module for Home Speakers(20-100W, 4-8¦¸), DC 12-24V, BT AUX Input by arrarown
- **How much does it cost?** € 49.72 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/664937454-bluetooth-5-0-audio-amplifier-board-zk-mt21-2-1)

## Best For

- arrarown enthusiasts

## Why This Product

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

## Key Features

- • **Built-In Safety Suite:** Over-voltage, under-voltage, over-heat, and short-circuit protections keep your setup safe and reliable.
- • **Tailor Your Soundscape:** Fine-tune treble and bass independently for a personalized HiFi audio experience that stands out.
- • **Compact & User-Friendly Design:** Miniature footprint with clear interface labels makes installation a breeze—perfect for home, office, or on-the-go setups.
- • **Power-Packed 2.1 Channel Output:** Experience immersive sound with 50W x 2 stereo plus 100W subwoofer power for rich, room-filling audio.
- • **Seamless Bluetooth 5.0 Connectivity:** Wirelessly stream your favorite playlists up to 49 feet away—cut the cords, not the quality.

## Overview

The ZK-MT21 Bluetooth 5.0 Audio Amplifier Board delivers a robust 200W 2.1 channel output with dedicated subwoofer support, combining wireless convenience and precise sound customization. Its compact design, extensive protection features, and dual input options (Bluetooth and AUX) make it an ideal upgrade for home audio enthusiasts seeking HiFi quality and versatile connectivity.

## Description

Bluetooth 5.0 Audio Amplifier Board, ZK-MT21 2.1 Channel 50W X 2 +100W Mini Subwoofer Power Amp HiFi Digital Audio Amp Module for Home Speakers(20-100W, 4-8¦¸), DC 12-24V, BT AUX Input

Review: Disappointed - Great little amp. Used this to replace my klipsch ProMedia 2.1 amp, night and day difference. You have more control over the sound and the Bluetooth is a great feature. One thing I would like to see maybe in a future revision is a bluetooth antenna especially if you have the unit under a very thick wooded desk. Edit: I have noticed that when I shut down my laptop there is high pitch hum coming from the speakers, I’m using high quality audio cable. Very annoying.
Review: Amplificador de audio - Viene bien empacado detalle por detalle , excelente

## Features

- Subwoofer Audio Amplifier Board: This ZK-MT21 with two powerful hifi audiochip drive, 4 low noise preamplifiers, and a large-capacity energy storage capacitor, just a little sound distortion. 2.1 channel 50W * 2 +100W stereo and subwoofer output, In addition, it comes with an antenna holder solder joint for external antenna connection (antenna not included in the package)
- Bluetooth 5.0 AUX INPUT, This MT21 is designed with 2 types of inputs: Bluetooth 5.0 wireless connection, and its transmission distance can reach 49 feet (without obstruction), and 3.5mm AUX audio input, Note: When using AUX mode, please confirm that the Bluetooth connection of this module has been disconnected
- Treble and Bass Adjustment: This digital Amp board with independent treble and bass adjustment buttons,you can directly adjust the treble and bass through the module, By adjusting the high and low frequency knobs of ZK-MT21, you can make the sound more layered and make the bass more shocking, and the treble more clear, enjoy the HiFi sound quality
- With Protective Function: This MT21 Bluetooth amp module is designed with over-voltage protection, under-voltage protection, over-heat protection, short-circuit protection, with case to protective it
- Mini Size and Easy Installation: The illustration of each interface is printed on the protective plate, making it easy to install and use even without instructions. Small size: 3.74 in*3.54 in*0.87 in, easy to carry, suitable home, car, bar,party and outdoor

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DDN8CLGG |
| Best Sellers Rank | #43,646 in Electronics ( See Top 100 in Electronics ) #99 in Home Audio Amplifiers |
| Brand | ARRAROWN |
| Brand Name | ARRAROWN |
| Customer Reviews | 4.4 out of 5 stars 30 Reviews |
| Manufacturer | DideaECO |
| Maximum Output Power | 200 watts |
| Maximum Supply Voltage | 24 Volts (DC) |
| Maximum supply voltage | 24 Volts (DC) |
| Minimum Supply Voltage | 12 Volts (DC) |
| Minimum supply voltage | 12 Volts (DC) |
| Model | MT21 |
| Mounting Type | Freestanding |
| Mounting type | Freestanding |
| Number of Channels | 3 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Number of channels | 3 |
| Output Power | 200 Watts |
| Package Type Name | Box |
| Part Number | MT21 |
| Unit Count | 1 Count |

## Product Details

- **Manufacturer:** DideaECO
- **Maximum supply voltage:** 24 Volts (DC)
- **Minimum supply voltage:** 12 Volts (DC)
- **Mounting type:** Freestanding
- **Voltage:** 12 Volts (DC)

## Images

![Bluetooth 5.0 Audio Amplifier Board, ZK-MT21 2.1 Channel 50W X 2 +100W Mini Subwoofer Power Amp HiFi Digital Audio Amp Module for Home Speakers(20-100W, 4-8¦¸), DC 12-24V, BT AUX Input - Image 1](https://m.media-amazon.com/images/I/712r7Ym87TL.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐ Disappointed
*by D***D on 11 January 2026*

Great little amp. Used this to replace my klipsch ProMedia 2.1 amp, night and day difference. You have more control over the sound and the Bluetooth is a great feature. One thing I would like to see maybe in a future revision is a bluetooth antenna especially if you have the unit under a very thick wooded desk. Edit: I have noticed that when I shut down my laptop there is high pitch hum coming from the speakers, I’m using high quality audio cable. Very annoying.

### ⭐⭐⭐⭐⭐ Amplificador de audio
*by Y***A on 18 July 2026*

Viene bien empacado detalle por detalle , excelente

### ⭐⭐⭐⭐⭐ Recomendado
*by M***E on 2 December 2025*

Muy buen producto lo recomiendo tiene buen sonido y un precio muy bueno

## Frequently Bought Together

- ARRAROWN Bluetooth 5.0 Audio Amplifier Board, ZK-MT21 2.1 Channel 50W X 2 +100W Mini Subwoofer Power Amp HiFi Digital Audio Amp Module for Home Speakers (20-100W, 4-8), DC 12-24V, BT AUX Input
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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-10-01*