Erica Synths’ Fusion VCA & VCF vacuum-tube Eurorack modules are now available.

The 24dB/12dB Fusion VCF is their take on the four pole lowpass filter. Each side of double triode drives signal between 2nd and 3rd stage of the filter, while germanium diodes are used to limit output signal.

They say that the result is a ‘deep sounding VCF with unique character.’ The module offers resonance volume compensation and filter slope selection. It also offers a 3-input mixer with dedicated mixer output.

Features:

4 pole lowpass resonant VCF with tube drive between stages

Three input signal mixer

Selectable 24db/12dB filter slope

Signal drop compensation, when resonance is increased

Germanium diode based output signal limiter

The core of Fusion VCA is a custom circuit, built around a Russian miniature pentode. Feedback adds harmonics to the original signal and acts similar to cutoff knob on VCFs and Deform knob controls amount of distortion in germanium diodes based circuit.

Features:

Miniature pentode based VCA

Manual VCA bias control

Audio signal feedback control

Germanium diodes/tube overdrive

Waveshaping – signal deform

2 input signal mixer

Overdrive flavour select switch

Pricing and Availability

Both modules are available now, the VCA priced at 240EUR and the VCF at 290EUR.