Doepfer A-104 Quad Resonance Filter subdecay and Curve using the CV

and Curve using the CV jacks

as well as for the broadcasting area

Once you have experienced what it does to your rig

Ergonomic Design

The T-Resonator transforms timely events into an analog feedbacked filter network

Doepfer A-104 Quad Resonance Filter subdecay and Curve using the CVA 104 is a fourfold formant filter as used in the Mixtur Trautonium by Oskar Sala. It is made of four parallel resonance filters, each filter can be switched to low pass or band pass or off. Frequency, resonance and level are controlled for each filter separately (no voltage control). The frequency range for the filters is about 50Hz 5kHz. The filter audio inputs are very sensitive so that distortion may intentionally be used to create new sounds if