Model: XY-S350HName: 2.1 channel Bluetooth audio power amplifier boardPower supply: DC12-38V/10ABluetooth version: 5.1Audio channel: 2.1 channelFrequency range: 20HZ- 20KHZAudio input: BluetoothandAUXandU diskandUSB sound cardAudio output: left and right channels subwooferVolume adjustment: 360'encoder adjustmentLeft(Right)channel max output power:220W/392-36VDC 175W/492-36VDC 100W/892- 36VDCsubwoofer max output power:355W/22-36VDC 250W/392-36VDC 19W/492- 36VDCSelf-protection Design: undervoltage, overtemperature, clipping,and short circuit protectionUnique function: Support Sinilink-app, the Bluetooth name, setthe Bluetooth password, turn off/on the prompt toneProduct net weight: 285gColour: blackMaterial: plasticSize: 130 x 116 x 27mmPackage Contents:1 x amplifier boardOnly 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. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Dadangjia