Erica Synths Bullfrog Highpass VCF Voice Card

The HIGHPASS VCF voice card expands the sound treatment capabilities of the Bullfrog by bringing a highpass filter into the game. This allows for exploring highpass and bandpass filtering. The voice card features typical VCF controls – CUTOFF frequency, RESONANCE, and CV LEVEL. The CV source switch allows for selecting between three CV sources – envelope generator 2, Sample & Hold LFO, which is a pulse wave generator in the Sample&Hold “module”. The voice card features internal audio connections that make patching less cluttered.