From top to bottom in the rack:
Krell SACD Standard - SACD Player
Krell S-1200 - Surround Processor
Krell KAV 3250 - 3 Channel Power Amp
Krell KSA50/100 (Impossible to tell without a close up of that golden plate) - 2 Channel Class A Power Amp
I think 😛. Obviously strange product setup, but look at how the're put in the rack, the power amps are both sitting to one side of the rack, with the KSA50/100 looking like the feet aren't even in the rack! Obviously they didn't care much, just wanted the typical american look.