Unlike many modern filter modules that use chips both poles of the ADE-20 are built with discrete OTA amplifiers, resulting in a warm vintage sound. The filter types are available at separate outputs; low-pass, high-pass and band-pass are self-evident but instead of a notch output you´ll find a all-pass output, a filter type you won´t find often. It is interesting for creating subtle phase shifting sounds and gets interesting when you mix it with other filter types.
Besides that the ADE-20 features a feedback insert input you can use as a second adjustable audio input but in first line it is intended to patch a filter output back to the input what will create new filter types and will influence the behavior of the filter. At higher resonance setting this effect can be very lovely :)
Voltages will not only control the cutoff frequency but also the resonance parameter. The latter will self-oscillate at high settings. Except the cutoff´s 1V/octave input all inputs have level controls. the circuitry is protected against reversed polarity.
Audio: Signal input, Feedback input. Filter outputs for low pass, high pass, band pass and allpass
CV inputs: 2x for Cutoff frequency (one with attenuator, one with fixed 1V/octave); 1x for resonance
Besides the 1V/octave input all CV and audio inputs have attenuators.
3U Eurorack module, 10HP wide. Low-profile due to parallel mounting of PCBs.
This item is discontinued or sold out and no longer available, please feel free to look for comparable new stuff in the following categories.