This is a great example of a used ALM/Busy Circuits Musical Instruments Module Filter Multi on Synth for Sale. ***B-STOCK: Box opened, product in perfect working order*** The MCFx2 is ALM’s state variable ‘MCF’ filter made double. It features 2 identica… Read More for more information and how to order.
This is a lovely example of a used ALM/Busy Circuits Module available on Synth for Sale. ***B-STOCK: Box opened, product in perfect working order*** The MCFx2 is ALM’s state variable ‘MCF’ filter made double. It features 2 identica… Read More for more information and how to order. ***B-STOCK: Box opened, product in perfect working order*** The MCFx2 is ALM’s state variable ‘MCF’ filter made double. It features 2 identica…
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.
A filter is a sound-shaping component that removes or emphasises specific frequency ranges. Filters are used to sculpt tone, add movement, and control brightness or depth, playing a central role in shaping raw sound into expressive and musical results.
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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