Big Shoppe DIY 240W High Power Bass Subwoofer Audio Amplifier Board 2.1Channel Dual AC22-26V

Kindly refer the product description before buying the product.
This product includes 2.1 motherboard and knob.
It adopts 6 imported disassembled three-way tube pairs, of which 4 are responsible for the channel and the other 2 are connected to the BTL circuit for subwoofer.
Boot delay, instant shutdown,short circuit, overload protection.
It has low noise, large output power and HIFI.