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Doupples is a stereo multimode filter in 8hp that is based on the sound of the beloved Ripples filter.  With 2 separate audio paths, each with cv control and attenuvertors, it opens up a host of creative possibilities.

The two channels share a resonance and v/oct cutoff control, and when at high resonance, Doupples can act as a v/oct sine wave generator.

Comes with an FR4 panel and a 2-year warranty, plus screws, washers and a power cable.