ALM Busy Circuits

Notes: ***B-STOCK: Box opened, product in perfect working order***


ALM Eurorack cases are available in a range of sizes all including an integrated powered bus boards.

The cases all feature anodised aluminium construction, an on/off switch, rubber feet, and high quality switched powered bus boards with numerous keyed headers and ample power capacity.

These are simple and compact Eurorack cases, perfect for small, focused systems, taking along on travels, or as a tabletop addition to a larger setup.

Cases are available in 4 sizes; 3U 84HP / 6U 84HP / 3U 52HP / 6U 52HP sizes. They all offer 1 Amp on both the -12V and +12V rails per row.

Great modern cases

The ALM powered Eurorack case was originally designed for the System Coupe. Wider interest has seen it evolve into a range of different sized cases being made available by themselves.

A fixed solid bus board provides quality ample power and plentiful keyed power connectors. The shielded DC/DC power converter is low noise and includes overload and short circuit protection. Fixed, quality mounting rails are used over sometimes frustrating sliding nuts. The case has a great looking all anodised aluminium construction that is both strong and light.

The case proportions are designed to look great on a table or desk (not too deep, just enough) and also be easy to fit in a bag and transport.

Decksaver case covers are available currently for the 3U/84HP, 6U/52HP, and 6U/84HP cases.

3U / 52 HP

Provides up to 1 Amp power on each -12V & +12V rails.
Connections for up to 9 modules.
Includes 2 Amp power 'brick'

Notes: ***B-STOCK: Box opened, product in perfect working order***


'Beast's Chalkboard' is dual channel stepped voltage source and adder for your eurorack modular synthesizer system. It primarily is intended as a dual octave switcher for VCO's but has many other uses including sequence transposition, FM ratio creation, buffered CV distribution and VCO calibration.

Technical Specifications:

Supply: +/-12V (Reverse voltage & polyfuse protection)
Current Draw: ~30ma
Size: 6 HP
Depth: 22mm (including power header)
Offset Error: +/- 10mV

Notes: The mmMidi is a simple & compact MIDI interface for your Eurorack synthesiser. It translates two independent channels of MIDI note, velocity and gate information to corresponding control voltage signals via either a classic MIDI DIN type connection or as a driverless USB MIDI device.

The mmMidi also converts MIDI Clock to analogue x24 fixed clock and run outputs (i.e DIN Sync). The optional mmT expander provides a third MIDI channel of 8 key mapped gate outputs.

Requiring minimal configuration and a pain free set up, the mmMidi makes it easy to sync Pam's clock to your DAW, control multiple synth voices, and trigger drum or sample modules with the optional mmT expander. The new USB-C connection makes it easy to drive your modular not just from your computer but also via your tablet, phone or any USB MIDI Host.

(Note: New 2025 mkII version adds USB-C functionality.)

Technical Specifications

Power: +12V 50mA / -12V 0mA
Size: 4HP
Depth: 38mm
MIDI response latency: 200-400 uSec
Resolution: Factory calibrated 12 bit 0-8V CV outputs. +5V gates

Notes: THE SBG-PRO supports mono, stereo, balanced, and unbalanced input and output via 6.35mm jacks with level matching controls with clipping indication. The module features both direct and voltagecontrolled equal power crossfading between wet and dry sources.

Additionally, an expression input, along with the included 'floating ring' cable and conditioned output, ensures safe, voltage-limited CV control of external devices from your modular system.

The module extends its sibling, the original S.B.G, by adding full size stereo balanced jack connections and voltage control focusing more on connectivity with not just pedals but also pro audio equipment including rack effects, 500 Series modules and mixing consoles.