ZK-TB21 2.1 Channel Bluetooth Amplifier | Real Electronics
ZK-TB21 2.1 Channel Bluetooth Amplifier
It is a Bluetooth 5.0 subwoofer amplifier board with a TPA3116D2 chip.It has an output power of 50W x 2 (for R and L channels) and 100W (for the subwoofer).The board operates on a DC power supply of 12-24V.It features independent knobs for adjusting the main volume, subwoofer volume, and R&L channel treble and bass.The amplifier board is compatible with speakers that are 20-100W and 4-8Ω.