When were the best tube amps made?

The best tube amps are being made today. Unfortunately, with the exception of the best current 300Bs, the best tubes aren't. But from, say, the 1950s to the current day, the pace of improvement in SS amp technology has radically outstripped tube technology.

@antigrunge2 - Allinic is a South Korean company, did you mean AirTight

When were the best tube amps made?  Last Thursday.

What were they?  Conrad Johnson.

Kondo, Allnic, Airtight, Audio note (uk), WAVAC, all make great sounding tube amps, but they are not necessarily better than vintage models (even the older models of these companies will favorably compare with current manufacture).  I am particularly enamored with modern tube amps from the Italian company Synthesis.  But, my absolute favorites remain quite old Western Electric amps and a custom built OTL from the early 1990s.

Yesterday