Lots of transistors. What do they all do! (schematic)

[BetaTripp]

Hi,

I'v got a bit of a background in electronics but haven't ever really designed anything myself (in a circuitry sense). The schematic I have attatched is one of a guitar amplifier, could somebody tell me what all of these transistors do?? I see that theres a differential amp on the left and possibly a current mirror at the bottom with the diode interseption, maybe for a voltage drop..... but thats about it.

Thanks!!

 

[LvW]

I would recommend to start improving your knowledge with some simpler circuits (basic amplifier circuits with one transistor, differential amplifier,...).

 

[AnalogKid]

There is one differential amplifier, one dual current source with different outputs, one voltage amplifier, one active zener, one Darlington pair, and one Sziklai pair. Almost all of these have Wikipedia pages. Don't know what the intent of the Filter box is; that is where the output coupling capacitor should be.

ak