AM8109 JP8 VCF - Red Rogans

Clone of lowpass filter from Roland Jupiter 8, with original OTAs - Red Rogan version

This module is replica of the Low Pass Voltage Controlled Filter from the legendary Roland Jupiter 8 and 4. This is a 2 and 4 pole OTA design that Roland first used in the Jupiter 4 in 1980, replacing a discrete version of the filter which took up more PCB space.

This is a warm sounding filter with smooth frequency control and a resonance that gradually increases up to full self oscillation, a sound very reminiscent of the early 1980′s. The difference between 2 and 4-pole modes is not dramatic, with the 2-pole mode providing a more gradual cutoff slope and silky sound. We launched this filter in 2011 and have sold over 250 since then.

https://amsynths.co.uk/home/products/filters/am8109-jp8-filter/