2.1 SUBWOOFER POWER AMPLIFIER BOARD -- 350W high-power power amplifier board, 3-channel (maximum left and right channel 100Wx2 + subwoofer 150Wx1) finished power amplifier board, fever-level high-power 2.1 power amplifier board.

SUPER CHIP PROCESSING -- 4558D audiophile operational amplifier for low frequency signal processing, output pure and unmanned super bass; LM324N four-channel operational amplifier for audiophile pre-tuning control the high and low sounds of the left and right channels can be adjusted freely.

VOLTAGE INPUT -- The input voltage of this power amplifier board is AC, double AC AC 18V-24V (double 24Vac is recommended), please select the transformer strictly within this range, and the general toroidal voltage can be matched to provide a stable power supply.

15000uF LARGE-CAPACITY FILTER CAPACITOR -- to ensure sufficient current supply in large dynamics! When the low frequency comes, ensure that the sound is low and not soft!

RECOMMENDED MATCHING SPEAKERS -- subwoofer: 6-8 inch 100W 4 ohms; left and right channel: 8-12 inch 100W mid-bass 4-6 ohms 2 speakers, plus 2 treble is suitable.