polaris

Intellijel Polaris

Multimode resonant filter with serial/parallel routing

10 HP Eurorack module

Polaris by Intellijel is a state-variable multimode filter offering low-pass, band-pass, high-pass, notch, and all-pass responses in a single module. Its key distinction is a serial/parallel routing switch that changes the filter topology, yielding different tonal characters from the same controls. Polaris tracks 1V/Oct accurately enough to be used as a sine oscillator, and its FM input enables through-zero frequency modulation for complex timbres. The built-in drive circuit adds saturation before the filter core, fattening the sound or pushing it into aggressive overdrive.

Features

  • State-variable filter design
  • 5 filter modes (LP, BP, HP, Notch, AP)
  • Serial/parallel topology switch
  • Accurate 1V/Oct tracking
  • Through-zero FM input
  • Built-in drive/saturation
  • Resonance up to self-oscillation

Controls & Jacks (25)

  • CLIP— Soft clipping / drive. Adds saturation and harmonic distortion to the signal before filtering. Useful for aggressive tones.
  • CUTOFF— Filter cutoff frequency. Controls the center/corner frequency for all filter modes. Full audio range with 1V/oct tracking.
  • FM 1— Frequency modulation depth for FM 1 CV input. Attenuverter — center is zero, CW adds, CCW inverts.
  • FM 2 CV— CV input for frequency modulation 2. Scaled by FM 2 knob.
  • Q— Resonance/Q control. Increases emphasis at the cutoff frequency. High values self-oscillate in LP and BP modes.
  • LP Out— Dedicated low-pass filter output. Always outputs the LP-filtered signal regardless of mode selection.
  • FM 2— Frequency modulation depth for FM 2 CV input. Attenuverter — center is zero.
  • Filter Mode— Selects the discrete filter mode. Cycles through: LP (low-pass), BP (band-pass), HP (high-pass), Notch, Allpass, Phaser. Affects the LP and
  • IN— Audio input. Accepts any signal level — the CLIP knob adds drive before filtering.
  • Q CV— CV input for resonance/Q modulation. Voltage-controls the resonance amount.
  • HP Out— Dedicated high-pass filter output. Always outputs the HP-filtered signal regardless of mode selection.
  • Multi Out— Multi-mode output. Signal reflects the Multi knob position — continuously morphs between filter types.
  • Mode Button 1— Selects filter mode preset. Cycles through available discrete modes indicated by the LEDs.
  • Multi— Continuous morph between filter types. Blends from LP through BP, HP, Notch, Allpass, and Phaser modes. The Multi Out reflects this blend.
  • 1V/OCT— 1V/octave pitch tracking input. Allows the filter to track pitch for self-oscillation melodies or precise filter tracking.
  • FM 1 CV— CV input for frequency modulation 1. Scaled by FM 1 knob. Use for envelopes, LFOs, or audio-rate FM.
  • AP— Indicates All-Pass filter mode is active.
  • Notch— Indicates Notch filter mode is selected.
  • PHASER— Indicates Phaser filter mode is active.
  • Mode Button 2— Secondary mode control. Fine-tunes or accesses additional filter configurations.
  • HP— Indicates High-Pass filter mode is active.
  • LP LED 1— Indicates Low-Pass filter mode is active.
  • BP— Indicates Band-Pass filter mode is active.
  • LP LED 2— Indicates Low-Pass filter mode (secondary indicator).
  • N— Indicates Notch filter mode is active.

Explore the interactive Polaris panel on BleepDex — tap any control to learn what it does.

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