This is a high fidelity audio amplifier driver board that can be use in other OPS power boards is been tested already wit good audio results

the PCB is one of the elements that works together with the OPS power audio board that I will share here to the name is Arc Welder soon I will share the gerbers of the output power audio amplifier board. I will provide schematic and the BOM on virtual simulation the results are really good the THD is really low. The version of this PCB is new SMD led can be use instead of through holes ones, the PCB size: 76 mm x 100 mm there is more information about this design in this link down below: the trim pot need to be adjusted to 65 ohms both of them.

https://www.diyaudio.com/forums/solid-state/248105-slewmaster-cfa-vs-vfa-rumble.html

Schematic