Model: XY-S350H Name: 2.1 channel Bluetooth audio power amplifier board Power supply: DC12-38V/10A Bluetooth version: 5.1 Audio channel: 2.1 channel Frequency range: 20HZ--20KHZ Audio input: Bluetooth+AUX+U disk+USB sound card Audio output: left and right channels subwoofer Volume adjustment: 360'encoder adjustment Left(Right)channel max output power:220W/392-36VDC 175W/492-36VDC 100W/892--36VDC subwoofer max output power:355W/22-36VDC 250W/392-36VDC 19W/492--36VDC Self-protection Design: undervoltage, overtemperature, clipping,and short circuit protection function: Support Sinilink-app, modify the Bluetooth name, setthe Bluetooth password, turn off/on the prompt tone Product net weight: 285g Colour: black Material: plastic Size: 130 x 116 x 27mm Package Contents: 1 x amplifier board Only the above package content, other products are not included. Note: Light 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.