Do amps sound better when left on for 30 minutes ?


Do amps sound better just by having it left on for a while, or do they have to make sound in the warming up process ?

gonglee3
I have tube equipment and turn them on and put cd on ( low volume ) play for 45-60 minutes..Usually cd is finished and is ready to go.......
I warm up tubes in amps 30-45 min as to not stress the tubes and shorten their life span. It seem after an hour to an hour and a half of playing everything starts to settle in and the system sounds more liquid (homogenous).
Product literature from Audio Research supports the idea of 'adequate warm up time' before critical listening occurs.