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ZKMT21 Bluetooth Power Amplifier Board 2.1 Channel Amplifier Module Audio Power Amplifier Board for DIY Speakers 500mV Support Bass Treble Subwoofer Frequency and Volume Control

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$22.66

$ 10 .55 $10.55

In Stock

About this item

  • Two Audio Input Methods: This Bluetooth audio 2.1 channel power amplifier module has two audio input methods, AUX and Bluetooth, two in one. The 5.0 Bluetooth version has higher transmission efficiency and longer transmission distance.The Bluetooth audio power amplifier module has 2.1 channels and the maximum output power is 2X50W+100W.
  • Mechanism: This power amplifier module has short circuit , overcurrent, overheating, and anti reverse to prevent complete failure. When an overload occurs, the device reports the fault condition to the processor to protect itself from damage. With antenna and antenna base, the is better, the efficiency is high, and the anti‑interference ability is strong.
  • Easy To Install: It adopts copper DC connectors and barrier terminals. It can withstand high current without heating or damaging wires. No DC head , compatible with the input power interface of this product, even if you don't have a DC head adapter or battery, you can easily wire it.
  • Broad Compatibility: Provides a stable and fast connection with a wide range of compatibility. Easy to install and use. With bass, treble, subwoofer frequency and volume control, it is widely used in shop solicitation, home theater, quadrate speakers, etc.
  • How to Use: Tip: If the audio input is sufficient and the power supply voltage/current is sufficient, there is enough output power. The higher the power supply voltage, the greater the relative power. Speakers with different impedances will have different output power. In the case of sufficient voltage and current, the greater the ohm of the speaker, the smaller the relative sound power.



Product Description

Bluetooth Amplifier Board
2.1 Channel Power Amplifier Board
2.1 Channel Power Amplifier Board
2.1 Channel Power Amplifier Board
Bluetooth Audio Power Amplifier Board

Specification

Item Type: Power Amplifier Board

Material: PCB

Model: ZK-MT21

Bluetooth Version: 5.0 (Approx. 15m/49.2ft without Obstruction)

Audio Input: AUX + Bluetooth

Number Of Channels: 2.1 Channels

Input Sensitivity: 500mV

Adapted Power Supply Voltage: 12-24V/5A or More (Do Not Connect 24VBattery Pack)

Speaker: 20-100W, 4-8Ω

Output Power: Maximum 50W (left and Right Channel), Maximum 100W (Subwoofer)

Protection Mechanism: Anti reverse Connection, Overheating, Overcurrent, Short Circuit Protection

Purpose: Digital Power Amplifier Board

How to Use

Tip: If the audio input is sufficient and the power supply voltage/current is sufficient, there is enough output power. The higher the power supply voltage, the greater the relative power. Speakers with different impedances will have different output power. In the case of sufficient voltage and current, the greater the ohm of the speaker, the smaller the relative sound power. Please make sure that the power of the adapter is greater than the actual working power of the amplifier.

Package List

1 x Power Amplifier Board Module

2 x Acrylic Board

1 x Screwdriver

9 x Screw

4 x Brass Connecting Rod

4 x Brass Terminal

5 x Knob

1 x Round Hole Connector

Note

1. The power switch on the board is a standby switch. After the switch is turned off, the machine is in a low‑power standby state. Turn off the power completely or unplug the DC plug on the machine for a long time.

2. Please use a power adapter with sufficient power to connect to the power amplifier board, otherwise the sound will be distorted.


Alonso
Reviewed in Mexico on March 27, 2025
Buen producto
Lindsey
Reviewed in Canada on March 21, 2025
Bought for my son to install a bluetooth system in his RC. It was easy to use and the set up was simple. He took it from the RC, and installed it in his room, then in the shed for summer parties. It has tons of life left in it and he learned a lot about systems with it, without it breaking the bank.
Carlos D.
Reviewed in Canada on February 27, 2025
This worked great at first. I only use it once or twice a week. Suddenly it stopped working, it still powers on but both the Bluetooth and analog input don’t work. Not impressed. I should have listened to another reviewer, who said the same thing.
Yes awsome
Reviewed in Canada on February 23, 2025
Works perfectthe onley opion i have is onley things are not dislikes at all jus to be clear i wish like in the ad if the wire olug in was seperat from wall so u could posibly charge ur batt one day "hint hint"and a better case thing luv the idea but thing fell apart 4 times before i could even install but with that aside i luv it good job
Redge
Reviewed in Canada on February 12, 2025
La carte électronique fonctionne parfaitement. J'ai branché le tout et cela à fonctionner du premier coup. Pour le bloc d'alimentation, j'ai choisie un bloc pour portable de 19.5 volts dc avec ampérage de 3.5. Il ne me reste qu'à fabriquer les caissons.
BenjaminGG
Reviewed in Mexico on September 14, 2024
Perfecto para mi proyecto de sonido. Su potencia de 2x50W + 100W impulsó mis altavoces sin problema, y la conexión Bluetooth 5.0 fue estable y fácil de usar. Muy buen producto.
Devon
Reviewed in Canada on September 1, 2024
Good for the price but the 2nd channel didn't work and the aux doesn't work. Good to recycle old speakers and make projects
Customer
Reviewed in Canada on June 15, 2024
Quality of sound is more than I expected. Very happy with it.
daddy
Reviewed in Canada on October 31, 2024
This is a great unit… pounds on my little red neck bonfire speaker… runs on a cordless drill battery.. will run for over 6 hours on 1 battery
Paul
Reviewed in Canada on October 1, 2024
Using in a van conversion with a couple of old car speakers, running form a 12v Lithium battery. Barely touching the battery and really loud. Can't wait to add a sub as well.
FeardarK
Reviewed in Brazil on January 24, 2024
The media could not be loaded.
Eduardo silva
Reviewed in Brazil on November 19, 2023
Ótimo me agradou muito na qualidade.
Flavio
Reviewed in Brazil on November 11, 2022
The media could not be loaded.
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