Low-pass filter with 4 individually controllable poles

KEPLER is a unique low-pass filter with four poles that are individually controllable with knobs and cv.
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The sound can range from soft and clean sounding sweeps to highly resonating self-oscillating sweeps. The cutoff is even controllable with v/oct which means that you could use the filter as an oscillator.
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http://www.livestockelectronics.com/kepler