2hp-clk

2hp Clk

Compact master clock with pause and CV control

2 HP Eurorack module

Clk is a compact 2HP voltage controlled clock generator designed to serve as a master clock in a Eurorack system. It offers an extremely wide tempo range from one pulse every 10 seconds up to audio rate, with a pause function accessible via button or gate input for expressive start/stop control. Its simplicity and dedicated clock-focused design make it a reliable rhythmic backbone for any modular setup.

Features

  • Voltage controlled clock generator
  • Wide tempo range from 10 seconds per pulse to audio rate
  • Two selectable rate ranges via toggle switch
  • Slow Range: 10 seconds to 34ms per pulse
  • Fast Range: 2.44 seconds to 8.5ms per pulse
  • Pause control via front panel button
  • Gate/trigger input for pause with 2.5V threshold
  • CLK LED indicates current clock rate
  • PAUSE LED indicates play/pause state
  • Clock output range 0V to 5V
  • Rate CV input range 0V to 5V
  • 2HP Eurorack format

Controls & Jacks (8)

  • PAUSE— Button that stops or starts the clock based on its currently selected play/pause state.
  • RATE CV— Control voltage input for rate modulation (0V–5V).
  • OUT— Clock output (0V–5V).
  • PAUSE— Gate/trigger input for pause control. Clock stops or starts on rising edge (threshold 2.5V).
  • RATE— Controls the rate of the clock. Far left is slowest, far right is fastest based on selected range.
  • RANGE— Toggle that switches between two rate ranges. Left selects slow range (10s–34ms), right selects fast range (2.44s–8.5ms).
  • CLK LED— LED that flashes to indicate the current clock rate
  • PAUSE LED— LED that indicates play/pause state — lit means paused, unlit means running

How-To Guides

  • Basic Master Clock Setup
  • External CV Tempo Modulation
  • Gate-Triggered Clock Pause for Live Performance
  • Audio Rate Clock as Oscillator
  • Glacial Slow Clock for Ambient Generative Patches
  • Manual Start-Stop Performance Control
  • Master Clock for Polyrhythmic Patches
  • Tempo Ramp with Envelope CV

Explore the interactive Clk panel on BleepDex — tap any control to learn what it does.

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