We at CatSynth have long been fans of E-MU Systems’ synthesizer. The Proteus 2K and Morpheus remain vital parts of my music studio – and some long-time readers may recall that I used to work for E-MU many years ago. So it was excited to see the new Eurorack modules from Rossum Electo-Music, the new project of E-MU founder and synthesizer inventor Dave Rossum.

The main module available is the Evolution, a Moog-style ladder filter with some unique twists. It allows the user to switch among topologies, from 3 to 6 poles, in real time. And of course this function is controllable via CV for some interesting effects. The filter itself sounds great, with signal conditioning to allow resonant sweeps while maintaining strong bass tones from the original signal. The Morpheus module is a Eurorack implementation of the legendary E-MU Z-Plane filter, which allows interpolation on three axis between different 14-pole filter configurations. All of the parameters for the Z-Plane filter are CV controllable. Unfortunately the Morpheus wasn’t ready for me to hear, but I certainly looking forward to it.