Product model: XY-S350H Product name: 2.1 channel Bluetooth audio power amplifier board Power supply: above DC12-38V/10A Bluetooth version: 5.1 Audio channel: 2.1 channel Audio input: Bluetooth+AUX+U disk+USB sound card Audio output: left and right channels + subwoofer Frequency range: 20HZ-20KHZ Volume adjustment: high-end encoder knob adjustment, feel Maximum output power of left and right channels: 220W/3Q-36VDC 175W/4Q--36VDC 100W/8Q-36VDC Maximum output power of the subwoofer: 355W/2Q-36VDC 250W/3Q-36VDC 195W/4Q-36VDC Protection mechanism: protection against overvoltage, undervoltage, clipping, short circuit, overheating, etc. Unique function: Support Sinilink-APP to the Bluetooth name, set the Bluetooth password, turn off/on the prompt tone Product size: 130mm x 116mm x 27mm colour: as shown Material: ABS Package Contents: 1 x bluetooth 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.