This module is in great working condition with very light rack rash.
12dB (2-pole) band pass filter based on the 3320 chip used in classic synthesizers such as the Prophet 5 and Oberheim OB-Xa . Cutoff frequency CV control allows for attenuating and inverting of CV input. Also features frequency CV2 (fixed level) and resonance CV. Resonance is tuned for self oscillation.