07-09-2020, 02:14 AM
If you are referring to Blonde/Brown Harmonic tremolo in TUT-2 and found many early 60's Fender I've built into about half a dozen amps and a number of outboard units. It's a fantastic sounding tremolo but as KOC points out committing 3 tubes to the task is big design choice. I think you have difficulty getting the same effect from op-amps. Many pedal companies have tried. When I build an amp with Harmonic Tremolo it's for player that considers the tremolo central feature.