Copper Traces - Seek


Seek is a powerful, yet compact sequencer module offering up to 64 steps per pattern. Five octaves can be employed to create melodies. Beside pitch and gate voltages, the circuit generates accent signals as well. Varying patterns is easy as pie thanks to six playback modes, a transpose function, the multipurpose reset input, a quantizer and clever random algorithms. Results can be saved in one of Seek’s twelve storage locations. For synchronization purposes, there is a clock input as well as an internal pulse generator. Despite its large range of functions, handling the unit is child’s play.



Seek is based on the concepts of classic bassline sequencers like the TB-303, but offers a much more advanced feature set. The most striking upgrade is that each pattern can hold up to 64 steps. Note values, stretching out over up to five octaves, can be entered utilizing the vertically positioned “keyboard”. Adjacent buttons allow the user to set rests, accents and legato phases. The results can be played back in six modes:

  • Forward
  • Reverse
  • Forward-Reverse
  • Ping-Pong
  • Random
  • Brownian (Stochastic process)

To control other Eurorack modules, Seek offers CV, gate and accent jacks. For synchronization, there is a clock input followed by a divider section. Additionally, the module has a reset connector, which can not only be used to restart the sequencer, but for triggering lots of other functions as well. In detail, the following commands can be sent to the unit:

  • Reset – Restarts the sequencer
  • Run / Stop – Starts or stops pattern playback
  • One Shot – Plays back the active sequence once
  • Play Direction – Changes the playback mode
  • Randomness – Influences the random generator
  • Slip-Forward – Sequencer jumps to the next step
  • Slip-Back - Sequencer jumps one step back
  • Jump to Random Step – Playback position is chosen by chance

In case there is no clock signal available, Seek can employ its internal pulse generator to set a tempo between 5 BPM and 250 BPM. The accent output is configurable so that it’ll make the clock available to other modules.

Quick pattern variations can be done using Seek’s random algorithms. In detail, there are static and evolving programs. A probability parameter controls how often the random algorithm is applied. With the random sequence generator, it is even possible to have the module creating its very own melodies. A built-in quantizer lets the user edit the scale of a pattern. Notes can be added or removed with the press of a button. Last but not least, there is a transpose function, which can lower sequences by one octave or raise them up to two octaves.

Finalized melodies plus parameter values can be saved in one of Seek’s twelve storage locations. When switching between sequences, you have the choice of whether the change should take place immediately or after the end of the previous pattern.


Clock and reset inputs
CV, gate and accent outputs


3U Eurorack module, 12 HP wide, 25 mm deep
Power consumption: 35 mA at +12 V and 7 mA at -12 V

0.2 kg
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