ZK-MT21 Bluetooth 5.0 Subwoofer Amplifier Board 50WX2+100W 2.1 Channel Power Audio Stereo Amplifier Tone Board Bass Amp

Feature Product Name 2 1 channel audio amplifier moduleProduct Model ZK MT21Bluetooth Version 5 0 no shielding 15 meters Input Sensitivity 500mVAudio Input AUX BluetoothChannel 2 1Chip Solution Domestic power amplifier chipPower Range DC 12 24 V 5A above Do not connect to 24V battery pack Adapter Speaker 20 100 W 4 8 ΩOutput Power Left and right channels 50W Subwoofer 100WProtection Mechanism Anti reverse connection Overheat Overcurrent Short circuitProduct Dimensions 93mm 90mm 22mmPackage Weight about 185g 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 adapter power supply is greater than the actual working power of the amplifier Package includes 1 x 2 1 channel audio amplifier module Requires simple assembly FAQ 1 How to choose a power supply The power supply with the board is very important The ripple of the selected power supply must be small A power supply with a large ripple will cause the bottom noise of the power amplifier board to become larger and there will be current noise The higher the voltage the greater the current and the more adequate the output power The power supply is 12V1A and can be equipped with 3 4inch speakers If it is above 19V 5A there is no pr