500mV Power Amplifier Board Module 2.1 Channel 50W*2+100W Bluetooth kq

Input sensitivity: 500mV. Output power: Left and right channels ≤ 50W, subwoofer ≤100w. Applicable speakers: 20~100W, 4~8Ω. Power amplifier chip: TPA3116D2 (With AM interference suppression function).

eBay