They can have a very nice sound which is attributed to their even-harmonic distortion ... but effective amplifier using a PCL82 triode-pentode. It’s a conventional tube amplifier circuit ...
Marshall has announced the arrival of its first commercially available factory-modded tube amps, the 1959 Modified and JCM800 ...
Another example of distortion from an unexpected source could be found in the stereo tube amp that was my youthful folly. It suffered from an appalling phase response that gave a spectacularly ...