This came from geo effects website anyone got an idea for doing this to a tsl 100 head??
(have a smoother, less buzzy distortion?
Use a lowpass filter somewhere inside the amp in the signal path to cut higher harmonics; perhaps a capacitor to ground from the final preamp tube grid or plate -or-
Use series grid resistors to cut the high frequencies in and after distortion stages
Use a lowpass filter after the amplifier and before the speakers to cut out some of the higher overtones. )