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This is a great example of a used ALM/Busy Circuits Musical Instruments Eurorack Module Voice on Synth for Sale. For Sale: ALM Akemie s Castle 410The ALM Akemie s Castle is a powerful and unique dual-voice FM synthesis module for Eurorack systems. Powered b… Read More for more information and how to order.
This is a lovely example of a used ALM/Busy Circuits Eurorack available on Synth for Sale. For Sale: ALM Akemie s Castle 410The ALM Akemie s Castle is a powerful and unique dual-voice FM synthesis module for Eurorack systems. Powered b… Read More for more information and how to order. For Sale: ALM Akemie s Castle 410The ALM Akemie s Castle is a powerful and unique dual-voice FM synthesis module for Eurorack systems. Powered b…
ALM / Busy Circuits is a UK-based modular synth manufacturer known for clean design, clever engineering, and modules that quietly become essentials in a Eurorack system. Founded by musician and engineer Matthew Allum, the brand has a reputation for solving real musical problems rather than chasing gimmicks, which is why their modules show up in so many serious, long-term racks.
The range covers everything from rock-solid clocking and sequencing to sampling, modulation, mixing, and performance utilities. ALM modules are typically compact, logically laid out, and designed to work beautifully with other brands as well as with each other. Whether you’re building a tight live performance system or a deep studio rack, ALM Busy Circuits gear is trusted for its reliability, musicality, and thoughtful approach to modular synthesis.
Dual indicates that an instrument or module contains two identical or complementary sections. This can apply to oscillators, filters, envelopes, or channels, allowing parallel processing, stereo operation, or more complex sound design within a single unit.
Eurorack is a modular synthesis format with standardised dimensions, power connections, and signal levels. Eurorack systems are built from individual modules mounted in cases, allowing users to create highly customisable instruments tailored to specific sound design and performance needs.
A module is a self-contained unit designed to perform a specific function within a larger system. Modules are commonly used in modular and Eurorack setups, where each unit handles tasks such as sound generation, modulation, filtering, or control, allowing systems to be built and expanded piece by piece.
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A voice is a single complete sound path within an instrument, typically made up of an oscillator, filter, amplifier, and modulation. It determines how many notes can be played at once and how each note is shaped. For example, an instrument with multiple voices can play chords and layered parts, while each voice handles the sound of one note independently.
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