A shortlist of the amplifiers you are looking for:
Classe DR-3B or DR-3 VHC (very high current)
Bedini 25/25 under serial number 100 -- these were the real 25's -- not the later and cheaper Japanese version, as John likes to call them.
Levinson ML-2's
Electro Research A75 John Iverson's first real amplifier
Krell KSA-50
Threshold SA-3
Classe DR-3B or DR-3 VHC (very high current)
Bedini 25/25 under serial number 100 -- these were the real 25's -- not the later and cheaper Japanese version, as John likes to call them.
Levinson ML-2's
Electro Research A75 John Iverson's first real amplifier
Krell KSA-50
Threshold SA-3