My Apologies to Miller Carbon

@stringreen:

• play some representative noise source to keep the voice coils at temperature
• include an RF generator to keep noise spectra
• ensure listening room is both isothermal and isobaric
• ensure that you consume the same food everyday
• get the same hours rest every night
• ...

Just curious....thanks for the clarity....*s*

One wonders if included on any 'better DOA' lists; mere patience settles that, anyway... ;)

“My BAT VK-6200 5channel amp stays on 24/7.
From a cold star it sounds best after about 4 days. Once the capacitors are fully charged the air around vocals/instruments as well as the decay is simply magic.”

 Whilst several of my larger valve amps do sound optimal after a couple of hours gently cooking away on repeat before a listening session,  I find the  ascertain that it takes 4 days for a piece of audio equipment to reach such a state a tad bonkers....what are you using for capacitors...Tins of beans !

A little light reading...

https://www.electronics-tutorials.ws/rc/rc_1.html

Shouldn't class A amp shut off after no signal for a long period?
At least my Plinius SA102 turns back to class AB from class A after 30 min or so.
My solid state preamp has a standby switch so I seldom turn it off unless I go for vacation or something. Wonder why SS power amps don't have standby option. 
I also like Audible Illusions tube preamps that keeps warmed up.

tsushima1, Are you really trying to say that as fast as the caps can charge (milliseconds) that is all there is to it and the amp is as good as it is ever going to sound? Because that seems to be the implication. Admittedly always hard to be sure when using innuendo and implied insults. So please be clear in your next insult, okay? I mean that.