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.
