Shipped fast. Packing very poor. Thin bubble envelope and plastic bags. Bent transistors. Good circuit and finish. However l don't think class A is correct. It's class AB.
I have used this amp board in Sony TA-4650 as replacement. It is better than the original. Need a speaker protection. And some resistors have to be changed. R8, R9, R10 & R11., to make it work in class AB. Extremely good amplifier in the Sony I replaced the IRFPs by 2SJ49 and 2SK134.