Brand
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.
Category
Tags
Analogue is sound generation based on physical electronic circuits such as oscillators, filters, and amplifiers rather than digital processing. It produces continuously variable signals with natural drift, saturation, and harmonic character, giving sounds a distinctive warmth and movement. Analogue instruments are valued for their hands-on control, immediacy, and expressive response in both studio and live performance environments.
CV is control voltage used to transmit continuous electrical signals between electronic instruments and modules. It allows parameters such as pitch, filter cutoff, amplitude, and modulation to be controlled in a fluid, analogue manner. CV is fundamental to modular and semi-modular systems, enabling direct, real-time interaction between sound sources, controllers, and processors.
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.
New Gear is unused and in original condition, supplied as it leaves the manufacturer. It is chosen for guaranteed reliability, full functionality, and the assurance of manufacturer support. For example, buying new ensures access to the latest design revisions, included accessories, and official warranty coverage.