..I believe that second trimmer is hidden behind the capacitor..
Yes high probability

Unveiled one possible ? 😀..I think you will be amused when it is unveiled.
Twice amused

The "mystery transistor" has a really strange package. Low profile, sharp bend, wide brim, kinda pitted surface finish.
Maybe a KP926B?
The unotainums, or at least the leftmost one, may very well be IRF240.
Maybe a KP926B?
The unotainums, or at least the leftmost one, may very well be IRF240.
Hint: They are from my NOS inventory.
Can be NOS from inventory, but was never used in any amplifier

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