Acid Rain Maestro (Discontinued)

Six-channel Eurorack modulation controller with SD card preset storage and real-time performance features

Overview

The Acid Rain Maestro Performance CV Generator is a 20hp Eurorack module from Acid Rain Technology. It's a clocked modulation controller with six independent channels. Each channel can loop or play one-shot modulation waveforms. It's built for live performance, so buttons let you switch waveforms, chains and modes in real time without losing sync. The design is inspired by automation lanes in digital audio workstation software, and it runs on internal or external clocking.

Specifications

Design

Nearly every function on the Maestro can be changed in real time with a minimal number of button presses. It generates several modulation types, including LFO shapes and random voltages. Each one has time multipliers, divisors, smoothing, and bi/unipolar options. Waveforms can be chained in sequence for evolving modulations or rhythmic patterns. A synchronized clock system counts the pulses elapsed since reset and keeps phase coherence across all six channel outputs, even when you switch waveforms by hand. Each channel can be switched live between looping and one-shot modes, and any channel can become a complex CV source through the One Shot function. Presets are saved to and loaded from a uSD card, and the recallable slots are cached in internal memory.

Context

The Maestro is part of Acid Rain Technology's modular lineup, alongside Chainsaw, Navigator, Junction, and Switchblade. All of them share the brand's focus on performance-centric clocked modulation tools.

Market

The Maestro was originally priced at $399.00 USD. A used unit in "Excellent" condition was listed at $347. Demo units were available for $359. Modulargrid lists the module as discontinued.

eBay Listings

Acid Rain Maestro Performance CV Generator EURORACK - NEW -

$349

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