HT21 Bluetooth Power Amplifier Board, Subwoofer 2.1 Channel Receiver Board, Voice Frequency Power Amplifier Module, Treble Bass Control Amplifiiler, Bluetooth Speaker Amplifier TDA7498E DC 15V to 36V

Feature: 1. TDA7498E Chip Solution: Stereo dual channel output ensures continuous serial high power operation, wide voltage input DC 15 to 36V, the power amplifier board uses two TDA7498, high fidelity, maximum output power can up to 160Wx2 and 220W. 2. Treble and Bass Control: If you're tired of amps with only one volume knob, you can use this bluetooth power amplifier board. By adjusting the high and low frequency knobs of the power amplifier board, you can make the sound more layered and make the bass more shocking. 3. High Compatibility: The DC adapter (plug specification 5.5mmx2.1mm) on the market can basically meet the requirements of HT21 Bluetooth power amplifier board.    How to Use: Mobile tablets can be connected to the amplifier board via Bluetooth or AUX to control your speaker device Specification: Item Type: Bluetooth Power Amplifier Board Material: PCB Weight: Approx. 383g/13.5oz Bluetooth Version: 5.0 (no occlusion, 15m) Power Amplifier Chip: TDA7498E Input Mode: AUX, Bluetooth and USB(dial wheel button to switch modes and songs Number of Channels: 2.1 channels (left channel, right channel, woofer)   Package List: 1 x Bluetooth Power Amplifier Board1 x Upper Cover 1 x Lower Cover Plate 5 x Button Cap 1 x Power Terminal 4 x M2x18 Copper Column   Note: 1. In the case of a large enough voice frequency signal input, the supply voltage or current is large enough to have sufficient output power 2. The higher the power supply voltage, the higher the output power, the smaller the speaker impedance, the higher the output power