Proteus

Analog signal path envelope filter and tap-tempo sample/hold filter in one compact pedal. Digital control handles mode switching and tap tempo while the filter circuit itself is fully analog.

Tap/Mode switch (tap 2-4 times for sample/hold random arpeggiator, hold 1 second for envelope filter), Frequency (filter resting point), Depth (filter modulation range), 1-2-4 switch (step multiplier for quarter/eighth/sixteenth note divisions), LP-BP switch (low-pass or band-pass filter).

Combines two classic filter effects—envelope follower (auto-wah) and random sample/hold (synth-style random filter steps)—with tap tempo. The step multiplier syncs sample/hold to musical subdivisions. Dual-color LED shows effect state. 9-12V DC, less than 25mA.