Grayscale Algorhythm Eurorack 8-Step Pulse Sequencer

The Grayscale Algorhythm is an 8-step pulse sequencer, in Eurorack format.

Modules can be linked to create longer patterns. Illuminated switches provide control over looped and one-shot playback, sequential and random modes, and gate/trig output for the pattern.

Loop length, pattern length, and gate/trig status can be modified during playback. All settings are automatically saved in memory and restored at startup.


  • 12 pulse outputs, 4 pulse inputs
  • 8 steps per module
  • Modules can be linked for longer patterns
  • Sequential and random modes (per module) with CV control
  • Programmable loop length and pattern length (per module)
  • Programmable gate/trig across nine independent outputs
  • Linked clock distribution to minimize cross-patching

The Grayscale Algorhythm is priced at US $295. Se the Grayscale site for details.

8 thoughts on “Grayscale Algorhythm Eurorack 8-Step Pulse Sequencer

  1. it looks intriguing but I’ll be honest I didn’t get how it works from the video.. the audio seems totally unconnected from the demonstration which is disconcerting. I would really have liked to hear it sequencing an envelope or drum module to fully understand what’s going on

  2. Yeah, me neither. Loved the music, but really didnt get how it worked from the vid. But if the module provided the diversety in the pattern, it surely is interresting.

  3. 3:19 onward = i would listen to the music of who ever made this. wish i knew. i think this device is pretty awesome although i imagine if you were someone with a lot of modular equipment itd be hard to recall how to function this if you didnt use it often. however as a not rich person id use it on the daily, its pretty brilliant for idm and sound design

  4. Why all the confusion? It is an 8 step sequencer, but instead of CV voltages, it sends out on or off pulses. It is very similar in function to the Synthrotek sequencer that was posted on this site a few days ago. The sounds being made are irrelevant unless it is running at audio rate. The sounds heard are just what this thing is triggering.

    1. the synthrotek video is an example of how to do it well, since someone talks you through the functions and all the audio is real-time, what the module is controlling as you see it. Clearly the scope is there for that purpose, but it doesn’t have the same impact as it would controlling a sine wave via envelope or similar.

      It makes a huge difference to watch someone tweak and hear the changes, since you can get a feel for what the module would be like to program. It’s also nicer to have someone talking so you can focus on the module without reading.

      1. I agree. Some talking to explain the patches and changes would have helped to understand what is happening in the video.

        1. Personally I hate synth demos with someone talking – most of the guys are major dorks and their voices are annoying.

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