I am looking for a schematic or service manual for these amps. I have been repairing class AB amps for 30+ years and can usually stare at the amp for a while and make a basic schematic in my head. There are only a few common amp topologies and a few common protections circuits. These Alpine amps have the usual three stage emitter follower output, but I am having difficulty with what exactly precedes that. They are both currently working, so I am not looking for repair help. I just want to understand the amplifier topology that is used.
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