Nekyia Circuits Root Locus Eurorack Multimode Filter Module

Killer Serge-style filter with some super-handy features like a voltage controlled crossfader on the two inputs, and a continuously variable mode output.

Root Locus is an analog 12dB/octave multimode filter, based on the CGS512 VCFQ filter. It adds a dual input crossfading mixer with gain control and a variable mode output with cv control for sweeps between filter modes, aiming for an extensive tonal variety! It also features a Ping input that allows for an impressively wide variety of percussive sounds. The sub range switch makes it a very versatile CV filter too, able to filter control voltages as well as transforming it to an interesting quadrature LFO while in self oscillation.

• Two input crossfading mixer with CV control
• Voltage controlled Mode out for smooth sweeps between filter modes
• Individual filter outputs for low pass, band pass, notch and high pass filters
• Frequency CV input with attenuverter and additional V/oct input
• Voltage Controlled Q
• Ping input for striking the filter
• Sub range switch for filtering control voltages and quadrature LFO operation