Product name: 2.1-channel Bluetooth audio power amplifier module Type: YS-E100L Bluetooth version: 5.1 Input mode: Bluetooth +AUXAudio channel: 2.1 channels Audio: left and right channels+subwoofer Power supply: DC9-24V/3A or aboveVolume adjustment: high-end encoder knob adjustment, feel smooth. Frequency range: 20Hz-30KHzSignal to noise ratio: 92dB Output power: 50W*2 (left and right channels) +100W (subwoofer)Satellite box (left and right channels) adapter speakers: 10W-50W/4Q-8QSubwoofer (subwoofer) adapter horn: 20W-100W/4Q-8QProtection mechanism: electrostatic protection, overcurrent protection, short-circuit protection and overheating protection. Unique function: support YS Audio-APP control. Product size: 73×70×20(mm) Product weight: 100g Note: The impedance of the adapter horn is 4Q, and the power supply cannot exceed 12V.Adapted horn impedance 8Q, power supply shall not exceed 24V. Note: Please allow minor deviation due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.