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


To me, one of life's best times are a cold beer and listening to good music.  I have noticed that the longer the listening/drinking session, the better the sound.  Is it the beer or do the electronics/mechanical components mellow out after some burn-in period?  Thought about listening with no beer, but that's not happening.
gvlandin
Thanks Doug, I can't believe I wasted time and money via my electric bill, because I delusionally imagined my Bryston amp sounded better after being on for 24 hours or so. Over and over I imagined this. If only this thread had appeared years ago. I could have saved a few bucks. My new Class A Luxman seems to take only about 30 minutes to come fully into song. 

Hey, my amp just caught fire and exploded! Gosh, it must have been thermally unstable. Rats! 🐀 🐀 🐀

I'll poke my head up here and admit that part of it for me is letting my ears adjust to listening. And there are certainly those evenings where I know there's not a thing wrong with how my system is sounding, but my ears just aren't up to par or are fatigued from noise all day. 
Mind altering substances can certainly enhance the listening experience, though I recommend something with a bit more kick than beer.