---
product_id: 213403491
title: "ZK-TB21 2.1 Channel Bluetooth Amplifier Board, 50W+50W+100W Output, IPEX-1 Antenna Base, 12-24V DC Input, Customizable Bluetooth Name (DAJUNGUO ZK-TB21 Black)"
brand: "damgoo"
price: "€ 41.60"
currency: EUR
in_stock: true
category: "Damgoo"
url: https://www.desertcart.hr/products/213403491-zk-tb21-2-1-channel-bluetooth-amplifier-board-50w-50w
store_origin: HR
region: Croatia
---

# 12-24V wide voltage input Bluetooth 5.1 with dual antenna 200W total output power ZK-TB21 2.1 Channel Bluetooth Amplifier Board, 50W+50W+100W Output, IPEX-1 Antenna Base, 12-24V DC Input, Customizable Bluetooth Name (DAJUNGUO ZK-TB21 Black)

**Brand:** damgoo
**Price:** € 41.60
**Availability:** ✅ In Stock

## Summary

> 🎵 Elevate your sound game with power and precision — don’t just listen, experience it!

## Quick Answers

- **What is this?** ZK-TB21 2.1 Channel Bluetooth Amplifier Board, 50W+50W+100W Output, IPEX-1 Antenna Base, 12-24V DC Input, Customizable Bluetooth Name (DAJUNGUO ZK-TB21 Black) by damgoo
- **How much does it cost?** € 41.60 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/213403491-zk-tb21-2-1-channel-bluetooth-amplifier-board-50w-50w)

## Best For

- damgoo enthusiasts

## Why This Product

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

## Key Features

- • **Built-In Safety Shield:** Comprehensive protections against overheating, reverse polarity, and voltage fluctuations keep your setup secure.
- • **Versatile Compatibility:** Supports Bluetooth and 3.5mm AUX inputs, effortlessly connecting to smartphones, TVs, and laptops.
- • **Power-Packed Audio Performance:** Delivers a robust 50W+50W+100W output for immersive sound clarity and depth.
- • **Customizable Bluetooth Identity:** Personalize your device name for a unique, professional touch that stands out in any environment.
- • **Seamless Bluetooth 5.1 Connectivity:** Enhanced dual antenna design ensures stable, long-range wireless streaming without dropouts.

## Overview

The ZK-TB21 is a high-performance 2.1 channel Bluetooth amplifier board delivering up to 200W total output with advanced TPA3116D2 HiFi chip technology. Featuring Bluetooth 5.1 with onboard and external IPEX-1 antenna for superior wireless range, it supports both Bluetooth and AUX inputs. Designed for professional-grade audio setups, it operates on a wide 12-24V DC input and includes multiple safety protections to ensure reliable, long-lasting performance. Customizable Bluetooth naming adds a personalized edge, making it ideal for tech-savvy millennials seeking powerful, versatile sound solutions.

## Description

Buy ZK-TB21 2.1 Channel Bluetooth Amplifier Board, 50W+50W+100W Output, IPEX-1 Antenna Base, 12-24V DC Input, Customizable Bluetooth Name (DAJUNGUO ZK-TB21 Black): Amplifiers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## Features

- 【Bluetooth 5.1+3.5MM AUX】The ZK-TB21 supports Bluetooth and AUX inputs, compatible with most devices such as smartphones, TVs, and laptops, allowing you to connect easily.
- 【TPA3116D2 HIFI Chip Solution】 Stereo Dual-channel Output to Ensure Continuous Serial High-power Operation, THD ≤0.1%. Wide Voltage Input DC: 12-24V;
- 【Enhanced Bluetooth Connectivity】Comes with both onboard and external IPX (MHF1) Bluetooth antenna base, improving signal strength and range without requiring soldering.
- 【Safety Protection】This Amp Board Has Overheat Protection, Reverse protection, Circuit Protection, Over-voltage and Under-voltage Protection；
- 【After-sales Service】Paying Attention To Customer Experience And Satisfying Customers Is Our Service Tenet. If You Have Any Questions About The Product, or The Product Has Quality Problems, Please Contact Us At Any Time, We Will Give You A 100% Satisfactory Answer.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0FN8CXZSY |
| Best Sellers Rank | #26,396 in Electronics ( See Top 100 in Electronics ) #366 in Audio Component Amplifiers |
| Brand | DAMGOO |
| Brand Name | DAMGOO |
| Customer Reviews | 3.6 out of 5 stars 6 Reviews |
| Item Dimensions | 47.24 x 39.37 x 8.66 inches |
| Item dimensions L x W x H | 47.24 x 39.37 x 8.66 inches |
| Manufacturer | DAMGOO |
| Maximum Output Power | 200 watts |
| Maximum Supply Voltage | 24 Volts (DC) |
| Minimum Supply Voltage | 12 Volts (DC) |
| Model | DAJUNGUO ZK-TB21 |
| Mounting Type | Freestanding |
| Number of Channels | 2 |
| Output Power | 200 Watts |
| Part Number | ZK-TB21 |
| Specification Met | Amazon's Standards |
| Supply Current | 5 Amps |
| UPC | 194852391963 |
| Unit Count | 1.0 Count |

## Product Details

- **Item dimensions L x W x H:** 4.72 x 3.94 x 0.87 inches
- **Manufacturer:** DAMGOO
- **Maximum Supply Voltage:** 24 Volts (DC)
- **Minimum Supply Voltage:** 12 Volts (DC)
- **Voltage:** 24 Volts

## Images

![ZK-TB21 2.1 Channel Bluetooth Amplifier Board, 50W+50W+100W Output, IPEX-1 Antenna Base, 12-24V DC Input, Customizable Bluetooth Name (DAJUNGUO ZK-TB21 Black) - Image 1](https://m.media-amazon.com/images/I/71asv+I-v4L.jpg)
![ZK-TB21 2.1 Channel Bluetooth Amplifier Board, 50W+50W+100W Output, IPEX-1 Antenna Base, 12-24V DC Input, Customizable Bluetooth Name (DAJUNGUO ZK-TB21 Black) - Image 2](https://m.media-amazon.com/images/I/81QXNEVRMxL.jpg)
![ZK-TB21 2.1 Channel Bluetooth Amplifier Board, 50W+50W+100W Output, IPEX-1 Antenna Base, 12-24V DC Input, Customizable Bluetooth Name (DAJUNGUO ZK-TB21 Black) - Image 3](https://m.media-amazon.com/images/I/91QZGsXbOqL.jpg)
![ZK-TB21 2.1 Channel Bluetooth Amplifier Board, 50W+50W+100W Output, IPEX-1 Antenna Base, 12-24V DC Input, Customizable Bluetooth Name (DAJUNGUO ZK-TB21 Black) - Image 4](https://m.media-amazon.com/images/I/91UI5wA0QUL.jpg)
![ZK-TB21 2.1 Channel Bluetooth Amplifier Board, 50W+50W+100W Output, IPEX-1 Antenna Base, 12-24V DC Input, Customizable Bluetooth Name (DAJUNGUO ZK-TB21 Black) - Image 5](https://m.media-amazon.com/images/I/81zsZsMGhuL.jpg)

## Available Options

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

## Questions & Answers

**Q: Does it come with a power cord ?**
A: No, you can use a 19v laptop charger but to get this thing fed what it needs buy a 24v 250watt power supply.

**Q: What is the low pass cut off for the subwoofer?**
A: The frequency of the bass channel is 20hz-200hz

**Q: Would I be able to hook up a regular speaker to the "subwoofer" channel, if I wanted to individually control the volume of that one speaker?**
A: The answer that specifies your frequency limitations is correct. If you connect a full range speaker, it will not sound good. But you can if you don't care about sound quality, in which case you should just go back under your rock and stay there.

**Q: I would want to use this for aux input only. can i set it to default to aux input? or do i have to switch from bluetooth to aux each time i power on?**
A: It comes default in aux , there is no such switch for it , to answer your question in simple words, when you get it just connect the aux to it and don't werry about nothing else.

## Frequently Bought Together

- 50W+50W+100W 2.1 Channel Subwoofer Amplifier Board with Treble and Bass Control, Dual TPA3116 Chip, DC 12-24V, Bluetooth and AUX Inputs, DIY Wireless Speakers AMP Board, Password Free
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**Shop now:** [https://www.desertcart.hr/products/213403491-zk-tb21-2-1-channel-bluetooth-amplifier-board-50w-50w](https://www.desertcart.hr/products/213403491-zk-tb21-2-1-channel-bluetooth-amplifier-board-50w-50w)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-07-06*