---
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: "₨855"
currency: SCR
in_stock: true
reviews_count: 5
category: "Arrarown"
url: https://www.desertcart.sc/products/664937454-bluetooth-5-0-audio-amplifier-board-zk-mt21-2-1
store_origin: SC
region: Seychelles
---

# 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:** ₨855
**Availability:** ✅ In Stock

## Summary

> 🎵 Elevate your sound game with power, precision, and wireless freedom!

## 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?** ₨855 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/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

- • **Customizable Sound Profile:** Fine-tune your audio with dedicated treble and bass knobs for crystal-clear highs and earth-shaking lows.
- • **Powerful 2.1 Channel Output:** Experience booming 50W x 2 stereo plus 100W subwoofer power for immersive HiFi sound.
- • **Robust Protection Circuitry:** Built-in over-voltage, under-voltage, over-heat, and short-circuit safeguards keep your amp safe and reliable.
- • **Compact & User-Friendly Design:** Mini size with clear interface labels makes installation a breeze—perfect for home, car, or party setups.
- • **Seamless Bluetooth 5.0 Connectivity:** Wirelessly stream your playlists up to 49 feet away with ultra-stable, low-latency Bluetooth 5.0.

## Overview

The ARRAROWN ZK-MT21 Bluetooth 5.0 Audio Amplifier Board delivers a total of 200W power through a 2.1 channel setup (50W x 2 stereo + 100W subwoofer). It supports Bluetooth 5.0 wireless streaming up to 49 feet and 3.5mm AUX input, with independent treble and bass adjustments for tailored HiFi sound. Designed with multiple protective features and a compact footprint, it’s ideal for upgrading home speakers or portable audio systems.

## 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: Big Boom for the Buck! - It's a terrific little device except for the face it does need a 24v power cord. They give a piece of one. Do order one of don't have it. That's the reason it doesn't get 5 stars. You will have to build it to a degree but nothing technical. Otherwise, it BOOMS. I bought the 80watt and it rocks hard plus if you have a sub... prepare for techtonic aftershocks. Yes it can.

## 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 |
| Brand | ARRAROWN |
| Brand Name | ARRAROWN |
| Customer Reviews | 4.4 out of 5 stars 26 Reviews |
| Manufacturer | DideaECO |
| 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 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.

### ⭐⭐⭐⭐ Big Boom for the Buck!
*by J***R on 22 December 2025*

It's a terrific little device except for the face it does need a 24v power cord. They give a piece of one. Do order one of don't have it. That's the reason it doesn't get 5 stars. You will have to build it to a degree but nothing technical. Otherwise, it BOOMS. I bought the 80watt and it rocks hard plus if you have a sub... prepare for techtonic aftershocks. Yes it can.

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

Viene bien empacado detalle por detalle , excelente

## 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 Seychelles*
*Store origin: SC*
*Last updated: 2026-08-06*