One amp manufacturer is not here - B&K Components - they made great amps during this time period. The ST-140 was probably their biggest seller and was rated as one of the ten best buys in Audio according to HiFi Heretic magazine. I had one and also the EX-442 but I had the Sonata version which came out in 91 I believe. That was a great sounding amp, but there are many others too. Aragon, Forte, Sonographe, Superphon are all great too
solid state power amps, golden oldies
What solid state power amps have stood the test of time? No older than 1980 and no newer than 1990. What amps, if introduced today, would still be given positive reviews? I believe that exceptional remains exceptional, regardless of time. Better older and exceptional than new and mediocre.