Erica Synths Pico VCF1, Filter Module, Similar circuit design of the Black Polivoks filter with Russian NOS operational amplifiers, Filter characteristic switchable from lowpass to bandpass, CV input with attenuator for the cutoff frequency, Self-oscillating, Width: 3 TE / HP, Depth: 35 mm, Power requirement: +12 mA (+12 V) / -11 mA (-12 V)