Feature: 1. Treble And Bass Control: 150W and 150W stereo bluetooth power amplifier module, high and low independent adjustment, AUX and bluetooth. 2. Stereo Effect: AUX Audio connection 2.0 channel Bluetooth audio power amplifier module easily achieve stereo playback sound effects. 3. Protection Function: Bluetooth power amplifier board has multiple protection mechanisms to ensure its safe operation. It has antireverse protection, undervoltage, overheating, overcurrent, short circuit protection. 4. 2 Input Methods: The power amplifier board can play music through bluetooth, or input audio signals through AUX. 5. TDA7498E Chip: This Bluetooth power amplifier board adopts TDA7498E chip, stereo dual channel output. Wide voltage input DC is 12?32V. Specification: Item Type: Bluetooth Power Amplifier Board Product Material: PCB Weight: Approx. 185g / 6.5oz Bluetooth Version: 5.0 (No Occlusion, 15m) Input Mode: AUX, Bluetooth Number Of Channels: 2.0 Channels (Left Channel, Right Channel) Adaptive Power Supply: DC12-32v(Undervoltage Protection Is Lower Than 9V, Or 12V Power Supply Can Be Supported) Adapter Speaker: 30-200w, 4-8 Ohm Output Power: Left And Right Channels less than 150w Protection Mechanism: Anti Reverse Connection, Undervoltage, Overheating, Overcurrent, Short Circuit Protection. Package List: 1 x Bluetooth Power Amplifier Board1 x Upper Cover Plate 1 x Lower Cover Plate 3 x Knob Cap1 x Screwdriver 8 x M2x3mm Screws4 x M2x14 Copper Column 4 x M2x3+3 Copper Column