A 4-stage cascaded OTA filter with dedicated LP, BP, and HP outputs plus a configurable MULTI output with 27 selectable filter modes including LP, BP, HP, Notch, Allpass, and Phaser. Features input drive with soft clipping and an asymmetric distortion circuit on the MULTI output.332
Visualization filter_response
Capabilities 2
Multimode VCFmultimode-vcf
4-stage cascaded OTA filter with 27 selectable filter types across LP, BP, HP, Notch, AP, and Phaser modes on the MULTI output, plus dedicated fixed LP (24dB/oct), BP (12dB/oct), and HP (24dB/oct) outputs.332
Phaserphaser
AP phaser mode blends the all-passed signal with the original input; combined with FM can produce phaser effects.332
Jacks 8 — 4 in / 4 out
Name
Signal
Voltage
Description
Inputs (4)
FM1
cv
—
CV input for the cutoff frequency. Attenuation controlled by the FM1 knob; tracks 1 V/octave at full CW.332
FM2
cv
—
CV input for the cutoff frequency. Amount and polarity controlled by the FM2 attenuverter knob.332
Configurable filter output selected by MODE and TYPE buttons; optionally processed through the asymmetric distortion circuit.332
Parameters 9
Name
Type
Range
Behavior
CUTOFF
knob
—
Sets the cutoff frequency of the filter. The knob position is combined with the FM1 and FM2 CV inputs.332
FM1
knob
—
Controls the attenuation of the FM1 CV input. Tracks 1 V/octave when fully clockwise.332
FM2
knob
—
Controls the amount and polarity of the FM2 CV input. Fully CW passes the input unmodified; fully CCW inverts it; 12 o'clock position has no effect.332
INPUT DRIVE
knob
—
Sets the drive/amplification of the input signal. Unity gain at 12 o'clock; at higher settings the signal experiences soft clipping distortion.332
MODE
button
—
Cycles between the different filter modes of the MULTI output: LP, BP, HP, N (Notch), AP (All pass), and PHASER. The PHASER setting blends the all-passed signal with the original input. LEDs indicate the current mode.332
MULTI DISTORT
switch
—
When in the up position, engages the asymmetric distortion circuit on the MULTI output.332
Q
knob
—
Sets the resonance of the filter. Combined with the Q CV input attenuated by the Q Attenuator knob.332
Q Attenuator
knob
—
Attenuates the CV signal applied to the Q (resonance) CV input.332
TYPE
button
—
Cycles between filter type variants for the currently selected mode. Each mode has up to 5 variations with different numbers of poles; slope increases with each type (A is fewest poles, up to D or E).332