There are some seriously significant reasons for preferring tubes to solid state amps or tube-modeling amps. Longevity is just one of them; I plan on using my AC30 in decades to come. The circuit design for the Top Boost channel is itself over 50 years old.
I only just learned about the mathematics behind bias & tube amplification and it's WONDERFUL. I'd explicate it here but I'm almost positive not too many people on this forum are as interested or intrigued by the beauty in math. Or at least an analytical proof for why tubes will ALWAYS sound different/better than solid states.
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