Is it the beer or do speakers/electronics really need some extended warm-up period?

A glass (or3) of good Champagne with a good smoke (of your choice) alway makes my system come alive. 
Must be the long warmup🤔

ANYBODY whose owned a class A SS amp will tell you those things need to warm up. The bias in my F5 doesn't settle to what it should be until it's been on at least an hour and I only do final tweaks after 2 hours when it's completely warm. Until it's all hot, things are drifting all over the place. Somebody wants to tell me that makes no difference?

Maybe I'm delusional or have crappy, thermally unstable amps, too, but my CAD211fes and 500MBs sound better after about 30-45 minutes of warmup.  Not that they are "bad" cold, just seem to smooth out a little bit.  Seems that way whether I stay in the room or turn on, leave, and come back after a short while.

There are warmup dedicated CD's I use the bellow :

https://telluriumq.com/system-disc/

At the big shows like CES almost all the rooms sound terrible on Day One. That’s because everything, the speakers, the cabling, the electronics are new. Now why anyone would think that was a good idea is a subject for another discussion, but most systems, including the really big expensive systems, didn’t sound even HALFWAY good until the THIRD day, which unfortunately is usually closing day. Pretty funny, in a way, right? And in many cases that was ONLY because the systems were driven all day and all of the night for two days straight! Hey, sounds like a Kinks song!