Amplifier warm up

@aewarren

There are a few other possibilities that were not considered:

1. Side One of the LP may be your favorite and thus it may have gotten more play and is showing its age compared to Side 2 that is more pristine.
2. By the time you had finished your meal, the power grid in your area may have become less busy and therefore better suited to your listening session.
3. That bong hit.

4.  That ribeye steak in your tummy makes you sleepy
5.  Those three glasses of petit syrah makes you loopy
6.  That square of tiramisu pushed you over the edge

lololololololololol  ..........

It's like being at a strip club in an anti-universe: LEAVE IT ON!

Really? I'm the only one who thinks, seriously, that having dinner is going to change one's perceptions just as truly as an amplifier's warm-up?  (I know if I'm waiting to eat, I respond to music a lot less happily than after a nice dinner.)

Actually, i agree with both the OP and N80.
Yes! solid state warms up, and over a 30-60 minute period the majority occurs. Many solid (state) reasons.
That said, everything sounds better after a glass of wine, or with stable blood sugar or whatever. So joking or not, N80 is, IMO, absolutely right. Since i design commercially, i have to account for the many things that might fool me into thinking something is better or worse. And how i feel is culprit #1.  That's why subjective evaluations are so difficult, and generally viewed as without credibility. Yet i wont argue that we need listening - i cannot measure most differences that i can reliably hear.
G

My sugden class A takes a good 90 minutes to sound its best, not that it sounds like crap prior....it also makes for a great space heater in winter.