Output : 15W*2 (left and right channels) + 30W (subwoofer)Satellite box (left and right channel) adapted speakers: 5W-30W/42-160Subwoofer (subwoofer) adapted speakers: 5W-50W/40-8QProtection mechanism: electrostatic protection, overcurrent protection, short circuit protection, overheating protectionUnique functions: Support Sinolink-APP, modify Bluetooth name, set Bluetooth password, turn off/on the prompt toneProduct model: XY-E30HName: 2.1 channel Bluetooth audio amplifier board module supply: DC9-24V/3A aboveBluetooth version: 5.1Audio channel: 2.1 channelAudio input: Bluetooth + AUXAudio output: left and right channels + subwooferVolume adjustment: high-end encoder knob adjustment, smooth feelFrequency range: 20HZ-30KHZSignal to noise ratio: 92dbcolour:BlackMaterial:plasticsize:70 x 73 x 20mmPackage Contents:1 x 2.1 channel Bluetooth audio amplifier board moduleOnly 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.