Use pink noise disc to warm up stereo


It generally takes between 1-2 hours for my system to sound good.  It actually sounds really terrible when I first turn it on. 
I’ve found that if I place a pink noise disc in the tray and leave it on at low volume for a shorter time, my system comes to life.
Big difference from a cold start
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There are also a number of free phone/tablet apps that generate pink noise if you have a Bluetooth capable streaming device. Handy for speaker placement as well.
My SS Pass Labs and as well as my expensive digital gear always sounds better after they’re on for at least an hour. (They must not be well designed.)

Once again we have to ignore posters that pose theoretical comments. (When will they get it?)

Just playing music works fine.
Hmmm. Odd. I find just being turned on for a bit does the job. Which is odd, as I have a similar setup to rvp: dared tube pre and Ghent Audio class D monoblocks

Do not keep tube amps on all the time. That's a fire waiting to happen.