Comments on Profile Post by FlySweep

welcome to tubes

Thing is.. I'm pretty confident it's not the tubes.. it's everything else in the black box. Namely, that (cap?) in the front.. when that's reached a certain warmth, the magic happens. I've swapped tubes then and noticed every tube sounds its best almost immediately.

sounds curious. If I understand correctly, you're swapping out a hot tube for a cold one, then the amp sounds better?

eEactly. Of course, I'm letting the hot tube cool down long enough (~5 mins) for me to not burn myself when removing.. then swapping in a cold tube.

[cold tube+ warm SW51+] sounds noticeably more dynamic and extended vs [cold tube + cold SW51+].

I experienced the same - SW51 was on but not playing music for hours, shut down, swapped tubes, turned back on, took a listen. Warm amp + cold tube was distinctly more "expansive" with regards to headstage. After a couple hours, it was kinda like, where'd all that expansiveness go <insert davechapelle crack junky.jpeg>?

@yotacowboy "After a couple hours, it was kinda like, where'd all that expansiveness go"

You mean after the cold tube warmed up (in the already warm SW51), you lost expansiveness?

I wonder if @Zampotech has any insight into this phenomenon?

The amplifier runs for 45 minutes, then turns off? Do I understand you correctly?

No, rather, when the amp is warm, but turning it off and replacing with cold tubes and then back on, the sound is more expansive than with the warmed-up tubes that were replaced.

I understood. The cold tubes come to the desired mode for a while. At this time, their parameters are not the same as those of a hot tube. In order to hear this, you need a very sharp and trained ear.
You can only envy the ears @FlySweep
I can only see such small changes using measuring instruments.