A-123-2 24dB Highpass

A-123-2 is a voltage-controlled high-pass filter with 4 outputs having different slopes (6, 12, 18 and 24dB).
The module is based on the special IC CEM3320 / AS3320. In high-pass mode, the control rate (CV infiltration) is much higher than that of other filters. This is not a problem with high audio levels and/or slow filters.
At typical audio input levels (i. e. Typ. 10Vss), distortions already occur from position 5 of the level control. This is intended to produce distorted signals if necessary. If necessary, the level control must be adjusted until there is no more distortion.