TipTop's Z2040 is a discrete clone of the Prophet 5`s low pass filter with come additonal features like voltage controlled gain and resonance. The gain parameter allows for overdriving the filter.
Voltage controlled, 24dB/octave steep, 4-pole lowpass filter based on the original US patent of the SSM2040 filter chip from Sequential Circuits' Prophet 5 Rev2. FM is the cutoff modulation parameter with a voltage controllable modulation depth (VC-FM)
The gain is adjustable and until the 1h position (marked with "0dB") the filter is pretty smooth but above that the sound gets more and more overdriven. A VCA pre-filter makes the gain voltage controllable; alternatively you can route the VCA post-filter with a jumper.
audio: input and output CV inputs for cutoff (FM), cutoff modulation depth (VC-FM), gain and resonance
3U Eurorack module, 8HP wide, 42mm deep current draw 20mA
Weight: 0.3 kg - 0.66 lbs