Feature:1. Four Types of Protection: This module has four types of protection functions, including overheat protection, circuit protection, overvoltage protection and undervoltage protection.2. High and Low Adjustment: Our module supports independent adjustment of high and low tones, Bluetooth and AUX audio input, and 50W for left and right channels.3. Small Distortion: This module has the classic two band tonality with small distortion and wide adjustment range, which is very easy to use.4. Easy to Install: Our module is very easy to install, just follow the guidelines and the correct operation process to install successfully, also very friendly for novices.5. Well Replacement: Designed reasonably, it is a very nice replacement accessory that can directly replace the old or damaged parts to get higher strength.Specification:Item Type: Power Amplifier BoardMaterial: Aluminum alloyBluetooth Version: 5.0(15m without shielding)SNR: >90dBInput Method: AUX and BluetoothNumber of Channels: Left and right dual channel (stereo)Applicable Power Supply: DC9-24V/3A or more (24V battery pack cannot be connected)Adaptable Speaker: 15-100W,4-8ΩPower Supply Voltage:12V-8Ω/12W+12W,4Ω/20W+20W15V-8Ω/18W+18W,4Ω/30W+30W19V-8Ω/30W+30W,4Ω/30W+30W24V-8Ω/40W+40W,4Ω/50W+50WProtection Mechanism: Overheat, overcurrent, short circuit protectionSize: Approx. 89 x 60 x 21mm / 3.5 x 2.36 x 0.83in.Package List:1 x Stereo Amplifier2 x Aluminum Alloy Plate3 x Knob1 x Heat Sink1 x Fitting1 x Screwdriver8 x Screw8 x Studs