Product model: XY-T50H Product name: 50W+50W high-bass adjustable stereo Bluetooth power amplifier board Power supply: DC5-26V/5A or above Bluetooth version: 5.0 Audio input: Bluetooth+AUX+USB stick+USB sound card Audio output: passive speaker+3.5mm interface stereo output Volume adjustment: high-end encoder knob adjustment, smooth feel Frequency range: 20Hz-30KHz Signal-to-noise ratio: 92dB Applicable horn: 10W-200W/4 - 8 Output power: 50W * 2 Protection mechanism: static electricity, overvoltage, undervoltage, overheating, DC detection and short circuit protection Special function: support Sinilink-APP control Product size: 95mm x 70mm x 25mm color:Black Material:PCB+metal Package Contents: 1 x XY-T50H power amplifier board 1 x DC adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.