20 year amps most are ancient history unless you are very nostalgic.Good luck though.
20 Year Old Amplifiers compared to 2017
Just a random thought, but I’m curious just how well the state of the art solid-state amplifiers from 20 years ago compare to some of today’s better offerings. For example, what does a pair of Mark Levinson 33Hs or a Krell FPB 600 sound like if compared to the latest offerings from Pass Labs or Ayre Acoustics?