I do not have a good quality all tube amp here, so I would kindly ask anyone that does, or knows, to help me:

Turn guitar to max, on the clean channel, turn the gain up so that it is not clean anymore but overdrives. Make sure that playing a chord clearly overdrives. Now play a single note, eg open low E and hear the "fuzz" of the overdrive. The question is how long does it take before the tone looses its fuzz and reverts to pure sinusoid? Is it possible that with this very soft overdrive the tone will continue to maintain its "overdrive" sound as the note dies?

Will something blow? Is the PSU of the guitar amp (purposely) weak and cannot handle the low frequencies?

Thanks