---
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: "€ 44.55"
currency: EUR
in_stock: true
url: https://www.desertcart.de/products/664937454-bluetooth-5-0-audio-amplifier-board-zk-mt21-2-1
store_origin: DE
region: Germany
---

# Bluetooth 5.0, 49ft Range 2.1 Channel 200W Output 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:** € 44.55
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate your sound game—because your speakers deserve the upgrade!

## 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?** € 44.55 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/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

- • **Powerhouse Sound Delivery:** 50W x 2 stereo + 100W subwoofer for immersive HiFi audio that fills any space.
- • **Built to Protect & Perform:** Advanced over-voltage, under-voltage, over-heat, and short-circuit protections keep your setup safe and reliable.
- • **Compact & Versatile Design:** Miniature footprint with clear interface labels—effortless installation for home, car, or party setups.
- • **Tailor Your Audio Experience:** Adjust treble and bass independently for perfectly layered sound that matches your vibe.
- • **Seamless Wireless Connectivity:** Bluetooth 5.0 ensures stable, lag-free streaming up to 49 feet—cut the cords, not the quality.

## Overview

The ARRAROWN ZK-MT21 Bluetooth 5.0 Audio Amplifier Board delivers a powerful 2.1 channel output with 50W per stereo channel plus 100W subwoofer power. Featuring Bluetooth 5.0 wireless connectivity with a 49-foot range and 3.5mm AUX input, it offers flexible audio input options. Independent treble and bass controls allow precise sound customization. Built-in protections ensure durability, all packed in a compact, easy-to-install module perfect for home, car, or party audio enhancement.

## 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

## 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

## Product Details

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

## 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.

## 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 Germany*
*Store origin: DE*
*Last updated: 2026-01-31*