Feature:
*Two audio input ways: This -compatible audio 2.1 channel amplifiers module has two audio input ways, AUX and -compatible, two in 1. -compatible version 5.0 provides higher transmission efficiency and longer transmission distance. The -compatible audio amplifiers module has 2.1 channels and a maximum output power of 2 x 50W + 100W.
* for protection mechanism: This amplifiers module has short circuit  for protection, over-current  for protection, over-heat  for protection and reverse polarity  for protection to prevent complete failure. In the event of an overload, the device reports the error status to the processor to protect itself from damage. With antenna and antenna base, the signal is better, the efficiency is high and the interference immunity is strong.
*Easy to install: It uses copper DC connectors and barrier terminals. It can withstand high currents without heating or damaging the cables. No DC head cable, compatible with the input power port 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 wide compatibility. Easy to install and use. With bass, treble, subwoofer frequency and volume control, it is widely used in shops, home theater, square speakers, etc.
*Use suggestions: If the audio input is sufficient and the voltage/power supply is sufficient, there will be enough output power. The higher the supply voltage, the greater the relative power. Speakers with different impedances have different output powers. With sufficient voltage and current, the higher the ohm value of the speaker, the lower the relative sound performance.

Specification:
Part Name: 2.1 channel -compatible audio amplifiers module
Color: Black
Material: Plastic
Model: ZK-MT21
-compatible version: 5.0 (unobstructed, 15 meters)
Input sensitivity: 500mV
Input ways: AUX+-compatible
Power amplifiers chip: domestic power amplifiers chip
Number of channels: 2.1 channels
Compatible speakers: 20~100W, 4~8Ω
for protection mechanism: anti-reverse connection, overheating, overcurrent, short circuit  for protection
Adaptable power supply: DC12~24V/5A or above (24V battery pack cannot be connected)
Output power: left and right channels <50W, subwoofer <100w
Product Size: 93x90x22 (mm)
Product Weight: about 185g (including packaging)
Tip: Only when the audio input is sufficient and the power supply voltage/current is sufficient, there will be sufficient output power!
The higher the power supply voltage, the greater the output power, and the smaller the speaker impedance, the greater the output power!
Please make sure that the power of the adapted power supply is greater than the actual working power of the amplifiers!

Package Content:
1*2.1 channel -compatible audio amplifiers module
1*power adapter
1*screwdriver


Note:
1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.
2. Please allow slight manual measurement deviation for the data.