maestro

Acid Rain Technology Maestro

6-channel clocked modulation controller

20 HP Eurorack module

Maestro is a 6-channel clocked modulation controller inspired by DAW automation lanes. Each channel generates a looping or one-shot waveform synchronized to an internal or external clock, with timing from 1/32 note to 32 bars. The Chain function lets you sequence different waveforms back-to-back on a single channel for complex evolving modulation. Presets save to uSD card and recall instantly, making it a powerful performance tool for dramatically shifting modulation states mid-set.

Features

  • 6 channels of clock-synchronized looping or one-shot waveforms
  • 8 waveform types: ramp up, ramp down, triangle, sine, square, random step, random smooth, noise
  • Chain function sequences multiple waveforms per channel
  • One-shot mode for triggered complex CV shapes
  • Timing from 1/32 note to 32 bars at 4 PPQN
  • Follows external clocks with extreme accuracy, including swung clocks
  • Internal clock when no external clock patched
  • Phase-synchronized outputs across all channels
  • Instant preset recall from uSD card cached in internal memory
  • Save and recall entire module state or individual channel settings
  • Reverse polarity power protection
  • Designed and assembled in the Pacific Northwest

Controls & Jacks (52)

  • Clock Output— Outputs the internal or external clock signal for syncing other modules.
  • Reset Output— Outputs a reset trigger to sync other sequencers and modules.
  • Output I— CV output for channel I, outputs the programmed modulation voltage.
  • Output II— CV output for channel II, outputs the programmed modulation voltage.
  • Output III— CV output for channel III, outputs the programmed modulation voltage.
  • Output IV— CV output for channel IV, outputs the programmed modulation voltage.
  • Output V— CV output for channel V, outputs the programmed modulation voltage.
  • Output VI— CV output for channel VI, outputs the programmed modulation voltage.
  • Clock Input— External clock input that drives the module tempo at 4 PPQN.
  • Reset Input— Reset input that restarts all channels to the beginning of their waveforms.
  • Gate Input I— Gate or trigger input for channel I, used for one-shot mode triggering.
  • Gate Input II— Gate or trigger input for channel II, used for one-shot mode triggering.
  • Gate Input III— Gate or trigger input for channel III, used for one-shot mode triggering.
  • Gate Input IV— Gate or trigger input for channel IV, used for one-shot mode triggering.
  • Gate Input V— Gate or trigger input for channel V, used for one-shot mode triggering.
  • Gate Input VI— Gate or trigger input for channel VI, used for one-shot mode triggering.
  • Clock LED— Displays the clock tempo at 4 pulses per quarter note.
  • Reset LED— LED indicator for reset signal activity.
  • I LED— Output state LED for channel I showing current output voltage level.
  • II LED— Output state LED for channel II showing current output voltage level.
  • III LED— Output state LED for channel III showing current output voltage level.
  • IV LED— Output state LED for channel IV showing current output voltage level.
  • V LED— Output state LED for channel V showing current output voltage level.
  • VI LED— Output state LED for channel VI showing current output voltage level.
  • High— Selects the high waveform shape for the current channel. In clock menu, performs a manual clock reset.
  • Low— Selects the low waveform shape for the current channel. In clock menu, resets tempo to 120 BPM.
  • Square— Selects the square waveform shape for the current channel.
  • Random— Selects the random waveform shape for the current channel. In clock menu, sets a random tempo.
  • Save— Enters the save menu to store the module state to one of 14 slots on the micro SD card.
  • Load— Enters the load menu to recall a previously saved state from the micro SD card.
  • Clock— Enters the clock settings menu for adjusting internal clock tempo and behavior.
  • Ramp Up— Selects a ramp-up (ascending) waveform shape for the current channel.
  • Ramp Down— Selects a ramp-down (descending) waveform shape for the current channel.
  • Triangle— Selects a triangle waveform shape for the current channel. In clock menu, increases tempo by 5 BPM.
  • Sine— Selects a sine (valley) waveform shape for the current channel. In clock menu, decreases tempo by 5 BPM.
  • Smooth— Toggles smoothing on the selected waveform for glide-like transitions between values.
  • Bipolar— Toggles the output between unipolar (0V to +5V) and bipolar (-5V to +5V).
  • Chain— Enters the chain menu to sequence multiple waveforms in a row on a channel.
  • 1/2— Sets the clock division to 1/2 for the selected channel.
  • 1/4— Sets the clock division to 1/4 for the selected channel.
  • 1/8— Sets the clock division to 1/8 for the selected channel.
  • 1/16— Sets the clock division to 1/16 for the selected channel.
  • 1/32— Sets the clock division to 1/32 for the selected channel.
  • Triplet— Modifies the current timing division to a triplet subdivision.
  • Slow— Halves the clock speed for the selected channel, extending timing ranges.
  • Mute— Mutes or unmutes the output of the selected channels.
  • I— Selects channel I for editing. Multiple channels can be selected simultaneously.
  • II— Selects channel II for editing. Multiple channels can be selected simultaneously.
  • III— Selects channel III for editing. Multiple channels can be selected simultaneously.
  • IV— Selects channel IV for editing. Multiple channels can be selected simultaneously.
  • V— Selects channel V for editing. Multiple channels can be selected simultaneously.
  • VI— Selects channel VI for editing. Multiple channels can be selected simultaneously.

How-To Guides

  • Slow Evolving LFO
  • Chained Complex Modulation
  • One-Shot Triggered Envelope
  • Live Preset Switching

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

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