Above circuit is a pretty generic High-end Power Amplifier. The schematic quite similar to the one that ghosts around the block as "The G0ldm0uth" Amplifier over at DIYA, but with bipolar tripple emitter follower output and not mosfets, output runs at a fair bit of bias current, around 1 Amp in total and uses three complementary pairs of 30MHz (-nominal-) output transistors.
