QPAS

The QPAS, Quad Peak Animation System, is a stereo filter built on four filter cores, with low pass, band pass, high pass and Smile Pass outputs for both the left and right channels. Its FREQ knob and two CV inputs set all four cores at once; RADIATE-L and RADIATE-R spread the cores' cutoffs apart in each channel for moving, animated peaks, and Q sets the resonance of all four. The !! and ¡¡ inputs take gates or audio to excite and modulate the circuit, and an input LEVEL with its VCA sets how hard the filter is driven.