A3-BASS 300W High power subwoofer amplifier board Can be used for mono full frequency

Product details:

Adopting a fully symmetrical double differential input structure and a constant current source with a constant operating point, the sound quality is very delicate and the sound field is very good.
Toshiba original paired tube 2SC5200 2SA1943 2 pairs, can provide a maximum output power of 4 ohms and 300W.
Linkwitz Reiley frequency division design for purer low frequencies.
Japanese Omron protection relay, safe and reliable in operation.

Parameters:

PCB size: 150X100MM
Output power: (calculated in 4 ohms)
33VX2 140W
28VX2 90W
24VX2 70W
18VX2 40W
Power supply voltage: Double 18 to Double 38, 1 channel is the main voltage. Double 15 to Double 18, 1 channel is a low-pass filter. If the voltage exceeds 33V, one single 12V channel needs to be added as a horn protection relay. When the voltage is below 33V, it can be shared with the main voltage.