Grone 2 Drone Synthesizer (Pedal)

Ever wonder how math can conjure endless dark drones? This pedal pulls tones from 16 binary equations turned into analog waves, letting you twist them with just three knobs—A0, A1, A2—for wild timbres and a sample rate dial to shift pitch and speed.

It's built tough in pedal format, powered by standard 9VDC center negative, with an audio input for fuzzing external signals alongside its white noise gen and osc output. Shape everything through an MS-20 style resonant lowpass filter using cutoff, resonance, and dual mod inputs, while an LFO with eight waveforms (ramp, triangle, sine, random, and more) animates the filter or delay. Effects shine with tap-tempo delay (including reverse), freezable reverb plus pitch shifter, and fuzz for grit—all summed to a mono out, plus expression pedal jack for foot control.

Players dig its standalone power for ambient gigs or as a processor, praising the filter's bite and equation variety for unique textures, though some note the learning curve with binary selection via up/down switches.