Weather-induced amp performance variation

Don't forget that the weather can play havoc with your sense of hearing.

At my former work at a big Aerospace outfit (I'm retired now) air conditioning with exceptionally tight specs was always provided in labs where there were big computers and other electronic equipment. When the weather got really hot, and the office AC couldn't hack it, many people migrated from their desks to the labs. I guess management thinks that their hardware is more important than their people!