---
product_id: 650977146
title: "Bluetooth Audio Amplifier Board, ZK-TB21 2.1CH 50W x 2 +100W Subwoofer Power Amp with Treble and Bass Control, Bluetooth5.0 and AUX Inputs, Stereo Digital AMP for DIY Home Speakers"
brand: "arrarown"
price: "AR$115452"
currency: ARS
in_stock: true
reviews_count: 13
category: "Arrarown"
url: https://www.desertcart.com.ar/products/650977146-bluetooth-audio-amplifier-board-zk-tb21-2-1ch-50w-x
store_origin: AR
region: Argentina
---

# Bluetooth 5.0 wireless connectivity 50W x 2 + 100W subwoofer power Independent treble & bass control Bluetooth Audio Amplifier Board, ZK-TB21 2.1CH 50W x 2 +100W Subwoofer Power Amp with Treble and Bass Control, Bluetooth5.0 and AUX Inputs, Stereo Digital AMP for DIY Home Speakers

**Brand:** arrarown
**Price:** AR$115452
**Availability:** ✅ In Stock

## Summary

> 🎵 Elevate your DIY audio game with pro-grade power and precision!

## Quick Answers

- **What is this?** Bluetooth Audio Amplifier Board, ZK-TB21 2.1CH 50W x 2 +100W Subwoofer Power Amp with Treble and Bass Control, Bluetooth5.0 and AUX Inputs, Stereo Digital AMP for DIY Home Speakers by arrarown
- **How much does it cost?** AR$115452 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/650977146-bluetooth-audio-amplifier-board-zk-tb21-2-1ch-50w-x)

## 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 controls directly on the amp board—no extra devices needed.
- • **Powerful 2.1 Channel Output:** Experience immersive sound with 50W per stereo channel plus a booming 100W subwoofer output.
- • **Robust Protection Circuitry:** Built-in safeguards against over-voltage, under-voltage, overheating, and short circuits ensure reliable, long-lasting performance.
- • **Compact & User-Friendly Design:** Small footprint with clearly labeled interfaces makes installation and setup a breeze—even for DIY enthusiasts.
- • **Seamless Bluetooth 5.0 & AUX Inputs:** Effortlessly switch between wireless streaming and wired audio for ultimate flexibility.

## Overview

The ARRAROWN ZK-TB21 Bluetooth Audio Amplifier Board delivers a potent 2.1 channel output with 50W per stereo channel and a 100W subwoofer, enhanced by Bluetooth 5.0 and AUX inputs. It features independent treble and bass controls for personalized sound tuning, robust protection mechanisms for durability, and a compact design optimized for easy DIY installation. Perfect for millennial professionals seeking to upgrade their home audio setup with high-fidelity, customizable sound.

## Description

Product Description

Review: Quality & Clarity....WoW! - I am not a technician but just a music lover, so thought of trying myself with some extra speakers lying down at home. Believe me, both the quality and clarity of sound system is top notch. No regrets really. Bluetooth 5.0 connectivity is great.
Review: Best amplifier board - Quality good, hard bass, durability is ok

## Features

- Subwoofer Audio Amplifier Board: 50W+50W+100W Bluetooth 5.0 wireless connection, Bluetooth+AUX audio input, 2.1 channel stereo output, just a little sound distortion. 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, without using the player or speaker;
- Perfect Sound Quality Experience: The audio power subwoofer amplifier module with powerful chip, AM interference suppression function, shielding power inductance, low noise front stage operational amplifier, let you enjoy a more perfect sound quality experience;
- With Protective Function: This Bluetooth Amp module is designed with over-voltage protection, under-voltage protection, over-heat protection, short-circuit protection, with case to protective it;
- Easy Installation and Use: The illustration of each interface is printed on the protective plate, making it easy to install and use even without instructions. Small size: 4.72 in*3.94 in*0.7 in, easy to carry;

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08G1NZF3Y |
| Best Sellers Rank | #19,515 in Electronics ( See Top 100 in Electronics ) #13 in Hi-Fi Amplifiers |
| Brand | ARRAROWN |
| Brand Name | ARRAROWN |
| Customer Reviews | 4.2 out of 5 stars 360 Reviews |
| Manufacturer | DideaECO |
| Maximum Supply Voltage | 24 Volts |
| Minimum Supply Voltage | 12 Volts (DC) |
| Model Number | ZK-TB21 |
| Mounting Type | Surface Mount |
| Number of Channels | 2 |
| Output Power | 100 Watts |
| Package Type Name | Package" or "Kit |
| Part Number | AMP-B-01 |
| Specification Met | CE |
| Supply Current | 5 Amps |
| UPC | 789615751216 |
| Unit Count | 1 Count |
| Voltage | 24 Volts |

## Product Details

- **Manufacturer:** DideaECO
- **Maximum Supply Voltage:** 24 Volts
- **Minimum Supply Voltage:** 12 Volts (DC)
- **Mounting Type:** Surface Mount
- **Voltage:** 24 Volts

## Images

![Bluetooth Audio Amplifier Board, ZK-TB21 2.1CH 50W x 2 +100W Subwoofer Power Amp with Treble and Bass Control, Bluetooth5.0 and AUX Inputs, Stereo Digital AMP for DIY Home Speakers - Image 1](https://m.media-amazon.com/images/I/61j89C1+aIL.jpg)
![Bluetooth Audio Amplifier Board, ZK-TB21 2.1CH 50W x 2 +100W Subwoofer Power Amp with Treble and Bass Control, Bluetooth5.0 and AUX Inputs, Stereo Digital AMP for DIY Home Speakers - Image 2](https://m.media-amazon.com/images/I/61ouvu976bL.jpg)
![Bluetooth Audio Amplifier Board, ZK-TB21 2.1CH 50W x 2 +100W Subwoofer Power Amp with Treble and Bass Control, Bluetooth5.0 and AUX Inputs, Stereo Digital AMP for DIY Home Speakers - Image 3](https://m.media-amazon.com/images/I/71EDkNtx95L.jpg)
![Bluetooth Audio Amplifier Board, ZK-TB21 2.1CH 50W x 2 +100W Subwoofer Power Amp with Treble and Bass Control, Bluetooth5.0 and AUX Inputs, Stereo Digital AMP for DIY Home Speakers - Image 4](https://m.media-amazon.com/images/I/61+25l5cqkL.jpg)
![Bluetooth Audio Amplifier Board, ZK-TB21 2.1CH 50W x 2 +100W Subwoofer Power Amp with Treble and Bass Control, Bluetooth5.0 and AUX Inputs, Stereo Digital AMP for DIY Home Speakers - Image 5](https://m.media-amazon.com/images/I/61QBQzyXsqL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Quality & Clarity....WoW!
*by P***R on 6 April 2026*

I am not a technician but just a music lover, so thought of trying myself with some extra speakers lying down at home. Believe me, both the quality and clarity of sound system is top notch. No regrets really. Bluetooth 5.0 connectivity is great.

### ⭐⭐⭐⭐⭐ Best amplifier board
*by M***L on 12 April 2026*

Quality good, hard bass, durability is ok

### ⭐⭐⭐⭐⭐ All
*by R***R on 13 March 2026*

Good quality

## Frequently Bought Together

- ARRAROWN ZK-1002T 2.0 Channel Bluetooth 5.0 Amplifier Board 200W HiFi Subwoofer Audio AMP with Treble and Bass Control BT and AUX Inputs, DC 12-24V 2.0 Channel Stereo AMP Module for DIY Speakers
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**Shop now:** [https://www.desertcart.com.ar/products/650977146-bluetooth-audio-amplifier-board-zk-tb21-2-1ch-50w-x](https://www.desertcart.com.ar/products/650977146-bluetooth-audio-amplifier-board-zk-tb21-2-1ch-50w-x)

---

*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-05-18*