Any way to reduce quantization noise in the KPA?

  • THIS!!!
    Try turning the input noise gate to off and then locking the Input section. I think you'll find that what you are perceiving as aliasing/quantisation noise on high gain profiles will disappear.

    Thanks, but the noise gate isn't a problem in this case. I do leave it off almost always though.

  • Can't see that this has anything to do with quantisation or aliasing. Sounds somewhat like crossover distortion. You may find that in real amps too.

    Interesting theory! That would explain why some profiles seem to have more of it than others, even between profiles made by the same person. If it is indeed analog crossover distortion being profiled, am I right in thinking that compensating by turning up the tube bias control should help? Learning about this as I type ^^ I haven't noticed it to do so before, but then again I have a hard time identifying what that parameter actually does to the tone. Maybe it's worth a closer look.