This one has been in a damp shed for a while, so will need some drying out and cleaning, because it smells weird.
Knobs on top of the chassis:
Board mount stuff, boo:
Tiny output transformer isn’t my bag, also no impedance selector, hope this isn’t another 100v line job, doubt as has ‘high gain’ inputs.
And the underneath:
Pretty neat wiring, sort of looks like hadn’t really got the idea of the whole PCB thing, with putting loads of wires over it.