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©2019 by Plum Audio

Apex 4Robots is dual channel multi function module with 23 different modes in a small package of 1u/18hp (Intellijel 1u format)
Available modes:

  • Envelope
  • Double attack envelope
  • Repeating attack envelope
  • Looping envelope
  • Randomised AD envelope
  • Bouncing ball envelope
  • LFO
  • Tap LFO 
  • Frequency-modulated LFO (folded sine FM)
  • Frequency-modulated LFO (random FM
  • Varying wave shape LFO ( folded sine WS mod)
  • Varying wave shape LFO ( random WS mod)
  • Phase-locked loop oscillator
  • Mini-sequencer
  • ModSequencer
  • Pulse Shaper
  • Pulse Randomiser
  • Turing Machine
  • Bytebeats
  • Bass/Snare Drums
  • FM drum Generators
  • Randomised bass and snare drum generators
  • Randomised high hat


Expander connection is available on Apex back and 2 sizes of CV Expanders to choose from makes the ability to modulate  Apex parameters. 

  • Apex CV: 6hp with only 4 cv inputs.
  • ApexEx: 12hp with 4 cv inputs and attenuverters to scale and invert cv signals.


** Not compatible with Pulp Logic 1U.


CV Expander
Panel Colour
  • Apex 4Robots:
    1u (Intellijel Format)  18hp / 35mm Deep
    +12v 50mA , -12v 12mA, 5v 0mA
    Include Mounting screws and power cable.

    Apex CV Expander:
    1u (Intellijel Format) 6hp / 20mm Deep
    +12v 10mA, -12v 10mA, 5v 0mA
    Input range: 0 - 7.5v

    ApexEx Expander:
    1u (Intellijel Format) 12hp / 35mm Deep
    +12v 15mA, -12v 15mA, 5v 0mA
    Input range: 0 - 7.5v

    ** Not compatible with Pulp Logic 1U.