1. Widely used2. Simple installation3. Protection mechanism: electrostatic protection, overcurrent protection, short circuit protection, overheating protection4. Support Sinilink-APP, modify the Bluetooth name, set the Bluetooth password, turn off/on the prompt tone5. Achieve 360-degree stepless tuning and feel smooth, one-button start-stop, long-press switch machine operation is simple and convenientProduct 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 feel smoothFrequency range: 20HZ--30KHZSignal to noise ratio: 92dBOutput : 15W*2 (left and right channels) + 30W (subwoofer)Satellite box (left and right channel) adapted speakers: 5W--30W/4 ohm--16 ohmSubwoofer (subwoofer) adapted speakers: 5W--50W/4 ohm--8 ohmWeight: 100gDimensions: 70 x 73 x 20mmColour: as shownMaterial: ABSPackage Contents:1 x Audio 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.