Digitally-controlled full-analog Granular + Multimode VCF with two simultaneous filter flows (Granular VCF and Multimode VCF), each with its own output, plus a Mix output blending both. The granular section reshapes filter response on a per-cycle basis to create subharmonics, harmonies, unison, flanging, and formant effects; the multimode section offers LP2, LP4, HP, BP, BR, and IN modes.226
Capabilities 3
Granular VCFgranular-vcf
The granular VCF cycles through pre-programmed structures (filter and phase combinations) at audio rate based on zero-crossing detection of the input signal. Controls include Structure selection, Division, Phase/Track (Φ/Frq), and a Detect input for external cycling signals.226
Multimode VCFmultimode-vcf
The M.VCF section offers 6 selectable filter types: LP2 (12dB/oct lowpass), LP4 (24dB/oct lowpass), HP (24dB/oct highpass), BP (12dB/oct bandpass), BR (12dB/oct notch), and IN (bypass). Shares frequency and resonance controls with the granular section.226
Self-Oscillationself-oscillation
The Q (resonance) control can drive both filter sections into self-oscillation.226
Jacks 12 — 9 in / 3 out
Name
Signal
Voltage
Description
Inputs (9)
Detect
mixed
≥0.3V
Drives the granular engine in place of the audio input. Accepts audio, trigger, gate, or LFO signals (AC coupled, 300mV minimum rising edge). Supersedes the main audio input for zero-crossing detection.226
Audio output of the multimode filter section, selectable among LP2, LP4, HP, BP, BR, IN modes.226
Mix
audio
—
Audio output blending the M.VCF and G.VCF signals; mix ratio controlled by the Mix knob and CV input.226
Parameters 10
Name
Type
Range
Behavior
Div
knob
—
Sets the division of the cycling rate. The division tells how many times a step in a structure is repeated before changing to the next step. Division occurs after detect, phase, and track settings are applied. Shown in the third digit of the display.226
F
fader
—
Controls cutoff frequency for both filter sections simultaneously. CV from FM and V/Oct inputs are added to the fader position.226
FM knob
knob
—
Bipolar attenuverter for the FM CV jack. Zero level at middle setting (dot indicator). Right increases modulation amplitude; left increases inverted polarity amplitude.226
Mix knob
knob
—
Balances M.VCF (full left) and G.VCF (full right) at the Mix output. Can be voltage controlled via Mix CV input.226
Q
fader
—
Controls the amplitude of the resonance peak at the cutoff frequency for both filter sections, including self-oscillation capability.226
Structure
knob
—
Selects the granular filter structure (predefined sequence of filter and phase combinations). Structures are organized by loop length (2 to 8 steps) and variation. Hold encoder while turning to scroll quickly through length lists. Random structures indicated by [r] in first digit.226
Track
button
—
Toggles the Φ/Frq knob between Phase mode (Track off) and Track mode (Track on). In Track mode, the audio frequency is detected and musically detuned to become the cycling trigger, ranging from unison up to one octave higher.226
Type
button
—
Short press scrolls through 6 M.VCF output options: LP2 (12dB/oct lowpass), LP4 (24dB/oct lowpass), HP (24dB/oct highpass), BP (12dB/oct bandpass), BR (12dB/oct notch), IN (bypass). Long press activates phase inversion between the two filter sections.226
inv
button
—
Long press inverts the signal polarity between the two filter sections. Active state indicated by dark blips on the currently selected filter mode LED.226
Φ/Frq
knob
—
When Track is off: adjusts phase delay of the granular cycling within each cycle (minimum = immediate, increasing delays the phase position). When Track is on: tunes the cycling frequency from unison up to one octave higher; its range goes from x1 to x2.01.226