I am getting some new tubes for my amp, and I want to do a 24-hour burn in. How?

The way I've done burn in is to put on a track of pink noise and put on repeat, medium volume. I didn't go for 24 hours straight. I just kept a list -- day, number of hours, etc. Then each day, or overnight, I would put them on for, say 8 or more hours. Adds up quickly. My amp does not have a "standby" but I think the point is that it should be playing something, at a modest volume, through speakers.

Here are just a few sentences (verbatim), from a letter that Brent Jesse includes, when you receive tubes purchased from him:  "New tubes need a break-in period before they can exhibit their true sonic character when used in audio circuits.       Preamp tubes especially benefit from a good break-in.       This period may vary widely, but NOS vintage tubes usually need at least 48 hours of use, sometimes up to 100 hours.       New current production tubes need 24-48 hours typically.       Good break-in can be accomplished by either leaving your tube unit turned on for 2 days in a no signal condition, or you can just enjoy the tubes for several hours each evening and they will be broken in after several weeks."         An opinion from another highly regarded (personally, at least) source, on power tube burn-in: https://tctubes.com/power-tube-testing.aspx        Upscale burns theirs in for 72 hours, before testing:  https://upscaleaudio.com/pages/test-equipment       interesting:     https://www.youtube.com/watch?reload=9&v=jwmDf5bSRMQ

I would rather go on "or you can just enjoy the tubes for several hours each evening".

@rodman99999 @hilde45 

thanks guys. They are to come in on friday.

Ill probably go with @petg60 

Burning in while listening also adds to your experience. The process can be quite subtle, very obvious, or something in between and you gain more understanding hearing the changes.