Erica Synths - Fusion VCF V2

Warm and powerful – Erica’s Fusion VCF V2 is an analog low-pass filter with switchable slope. (Settings: -12 dB or -24 dB per octave.) Signals are fed to the module via a three-channel mixer. Thanks to its tube circuit, the Fusion VCF V2 sounds beefy and gentle at the same time. High resonance settings lead to chirping self-oscillation. With the help of a feedback patch, the module can be used as a drone generator.

The Fusion VCF’s mixer offers three audio inputs with level potentiometers. A mix output allows users to tap signals off directly behind the summing stage. The tube circuit is based on a double triode. It was placed between the second and third stage of the filter. The cutoff frequency can be modulated via a CV input plus attenuator. For adjusting the filter manually, there are cutoff and resonance potentiometers. A switch makes it possible to toggle between -12 dB and -24 dB slopes. Germanium diodes are used to limit the module’s output signal. The Fusion VCF’s basic character is voluminous and warm. High resonance values lead to harsh, yet musical self-oscillation of the filter. Feedbacks and drones can be created by connecting the mix output with one of the audio inputs.