John Hollis Frobnicator


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  • Freq


John Hollis

This is a ring-modulator which doubles as a tremolo. It was designed as a replacement for the somewhat over-complicated ElectroHarmonix Frequency Analyzer with its ridiculous high-voltage wall-wort and huge metal box. I've got it down to a 3080 OTA and a dual op-amp.

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ringfrobnicator ring frobnicator

Where to find one?

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ringfrobnicator ring frobnicator low frequency oscillator lfo-controlled fx pedal stompbox stomp box guitar effects pedal ringmod ring modulation ring modulator pitch/octave octaver frequency modulation modulate time-based lfo tremolo trem volume/amplification diy
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