Tremolos interest me as a good design has its own living pulse, which can sound lively like the instrument itself.
By shining a fading light against a photo-sensitive material, this tremolo uses all analog photo-coupling to restrict and vary the output. After a decade of development I've created this completely unique circuit, as my ideal tremolo sound.
This is a stereo variation of my smaller Optical Tremolo. It can take a stereo input, or split a mono guitar input between two amplifiers. The out-of-phase switch changes the oscillator of each channel to be out of sync - so one comes up in volume while the other drops. This creates a strange swirling effect. All original analog circuitry and true bypass mechanical switching.