I’ve kept myself busy! I’ve soldered in the socket and part of the right channel, the rest of the circuit’s parts have been pushed in and I will solder them in the morning. additionally I have soldered up left / right RCA jacks and a volume knob out of two trimpots vertically mounted and attached with a board at the top.

This is all going surprisingly well considering the complexity of building a dual-channel amplifier with just the datasheet’s schematic to go off of!