MAB
Major Contributor
So true.It is mostly/usually frequency response if there is a sound.
Hehe.has anyone perfected a solid state tube yet?
Yeah, that Pass Amp Camp has many of the features of tube amps, particularly the high output impedance and resulting interaction with a speaker's impedance.
This FR change is audible.
The distortion is really not audible until the amp clips, at that point so many things are going wrong, harmonic distortion being only one aspect. I do recommend taking that Klippel hearing test to appraise yourself of what level of sensitivity we actually have. Try listening to it with speakers off-axis to see if you can hear even lower levels of distortion. Compare the results to actual tube and solid state amplifier's distortion. It is quite educational, and a bit humbling...
Bob Carver claimed to do make his amps sound like tubes, but it was a bit of a show, I firmly believe he was taking advantage of our inability to measure with our hearing... The test was set up in a way that only the final result (where nobody could tell the difference) is reasonably valid, the initial sessions where people heard all of the differences between his amps and tubes were all done sighted, woo woo.