Filter, oscillate, destroy.

  • Six filter types per filter (LP 1-pole, LP 2-pole, BP 1-pole, HP 2-pole, HP 1-pole, BR 1-pole).​
  • Both filters track 1v/oct over 3-4 octaves (can be used as a limited VCO).​
  • Switch to configure serial or parallel routing.



Made for Modular

Softube's Eurorack platform. Learn more

Modular exclusive

Intellijel Korgasmatron II

USD 45


Taking inspiration from a classic Japanese synth, Intellijel Korgasmatron II is a dual voltage controlled filter which can also be used as a limited oscillator. Any sound passed through it comes out richer, more nuanced, more fiesty and colorful, largely due to the distortion characteristics of the resonant drive controls on each filter, and the fact that you can modulate and blend between two bold filters on settings as widely divergent as you like.

Fire it up in Softube Modular and start producing magic, from classic MS-20 type sounds to totally new territory.


Have a listen


Six Modes per Side

The Korgasmatron II has two completely independent and cross-fade-able six mode filters. Two low-pass options, two high-pass, a band-pass and a band-reject. Imagine the combinations!


Range of Grit

Just like the original hardware, the Intellijel Korgasmatron II can go from clean and precise to howling and aggressive, all depending on how you tweak the front panel controls.


"The Korgasmatron hardware is probably my favourite filter/drive Eurorack unit. The software in Modular does not disappoint at all, it sounds crunchy and in your face."

Rik Simpson
Record producer, sound engineer and musician known for his work with Coldplay

Far from a clone

While Korgasmatron II takes its name from a classic Japanese synth released in the early '80s, it's far from a clone. Korgasmatron II offers much more grit and flexibility than its predecessor.

It has a special overdrive feature that enables the output signal to be soft or hard clipped depending on how hard you drive the input signal. This is controlled via the input amp which starts clipping when you put the knob past 12 o'clock (assuming an standard 10 Vpp waveform). The hard/soft clipping differences are subtle on simple waveforms sources and dramatic on more complex sources (such as chords).

Two channels

Korgasmatron II also has two completely independent six mode filter outputs; one on each side. The types are selected via a rotary switch. Combining these two filters and CV controlling their characteristics can give rise to near-endless modulation possibilities, and due to the reactive nature of the filtering process, the activity is very dependent on the input material.

Try it in Modular FX on drums, guitars, vocals, brass... anything you like... and check out the nuances and baked edges you raise.

More filtering, more fun.

"With two multimode filters based on the famed MS20 circuit featuring resonant drive controls and serial, parallel or crossfade options, the Korgasmatron looks rather intimidating at first. But learning the ropes is well worth it, as it produces some gritty-sounding modulations."

Jan Hennig a.k.a. Kabuki
Music producer and sound designer for New Forms, V Recordings

In short


  • Made for Modular, Softube's Eurorack platform. Learn more about Modular
  • Dual filter + Xfade
  • Six filter types per filter (LP 1-pole, LP 2-pole, BP 1-pole, HP 2-pole, HP 1-pole, BR 1-pole)
  • Both filters track 1v/oct over 3-4 octaves (can be used as a limited VCO)
  • Switch to configure serial or parallel routing
  • Output soft and hard clipping
  • Resonance soft clipping control (Q drive)


  • System requirements

    • Monterey 12, Ventura 13, Sonoma 14
    • Windows 10 (64-bit), Windows 11
    • Softube account
    • iLok account
    • Computer with AU, VST, VST3 and/or AAX compatible DAW host software
    • Internet access (for downloading installers and managing licenses)

    Read full System Requirements and our Terms and Conditions 

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