[QUOTE=kite;2311583then I'm sure the idea of "tube amps sounding warmer" is within your ability to accept as a valid listening experience.
.[/QUOTE]
I heat my entire house with tube amps
love the glow - don't love the electric bill
PS there is logic in both the things you reference. Capacitors form part of the all-important digital to analogue conversion process so better quality ones do affect the sound. a better quality PC sound card will also have better quality DAC chips & associated components for the same reason.
Tube amps sound warmer ( as any electric guitarist will tell you) because the valves are analogue devices, not-hi-fi - when driven hard they boost mid-range harmonics (i.e. they add harmonic distortion) . Jim Marshall & Leo Fender did not do hi-fi!
So tubes are good if you want a great guitar sound, bad if you want a true hi-fi experience - & great if you can sell the things , as
boutique, with
DNA matched twin tubes for $3000 dollars or more when they cost about $30 to build