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Free Delivery for Mainland Spain orders over €99

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4ms Catalyst Sequencer Eurorack 8 Channel CV Sequencer Module

429.00 inc. VAT

354.55 ex. VAT

Bear in mind prices on the site are initially shown including Spanish VAT (21%).

After entering your shipping address at checkout prices on the site will update to show the correct VAT amount due to us based on your location. If purchasing from outside the EU, VAT, handling fees, and import duties will potentially be due on delivery.

Product Info

The Catalyst Sequencer combines a traditional clocked step-sequencer with an unconventional phase-based sequencer to produce a new paradigm in sequencing. Eight precision CV sequencer channels can be simultaneously driven by a clock, a phase CV, or scrubbed manually with the crossfader.

Each of the eight channels has its own sequence length, quantizer, transposition, clock divider, randomization, voltage range (max -5V to +10V), and selectable CV (precise 16-bit resolution) or Gate mode.

Phase-based sequencing is an advanced form of sequencing where each step is selected by CV. The Catalyst Sequencer has a smooth, responsive crossfader that scrubs the sequence, playing it forward or backwards to track your motions. Patching in a CV signal will do the same: a ramp-up CV plays the sequence forwards, a ramp-down plays it backwards, a triangle plays it ping-pong, and complex waveforms generate new interesting rhythmic and melodic patterns.

The Catalyst Sequencer can also turn into a Catalyst Controller! Hold down a special button combination to change between sequencer and macro controller modes. If you end up liking the Controller more, you can even remove the double-sided faceplate, flip it over, and re-install with the Controller artwork visible.

Based on the original Catalyst module from Emblematic Systems.


  • Sequences range from 1 to 64 steps
  • Eight output channels, each can be CV or Gate
  • Step forward, backwards, ping-pong, or randomly
  • Smooth, responsive crossfader can Scrub the sequence
  • Phase CV input scrubs the sequence with an external CV:
    • Ramp-up plays the sequence forward
    • Triangle wave plays ping-pong
    • Complex waveforms create complex patterns
  • Each channel can have a different Start and Length, and can Reset to any step
  • CV outputs can be set to -5V to +10V maximum, or limited to +/-5V, +5V, +3V, or +1V
  • CV outputs can be unquantized (sub-1mV resolution), or Quantized to common scales
  • Gate outputs fire one or more triggers when activated
  • Transpose globally or per-channel
  • Randomization of channel values/gates, with per-channel Random amount
  • Glide (glissando) or gate Ratchet can be set per-step
  • Tap Tempo button
  • Copy/paste a “page” (eight steps) or an entire channel


  • Width: 20hp
  • Depth: 24mm
  • Power: +12v 60mA / -12v 25mA

Manufacturer product page here.

Free Delivery for Mainland Spain orders over €99

Terms and conditions apply

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