ALM Busy Circuits

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


'Pamela's PRO Workout' is a compact programmable clocked modulation source for your Eurorack modular system. It provides 8 highly editable outputs producing various control voltage signals correlated and synced to a BPM based master clock.

Each output can provide everything from simple clocked triggers, complex rhythmic waveforms, quantised melodic patterns to random chaos with direct and assignable CV control over numerous parameters. These features together with a quick and easy to use interface provide almost limitless synced modulation possibilities in a tiny space.

Building on the original 'Pamela's Workout' & 'Pamela's NEW Workout' the evolved 'PRO' Pam maintains the precursor's form factor and intuitive workflow but improves and adds many new features with upgraded hardware, more CV inputs, a new full colour hi res display and rewritten software adding many new enhancements like micro grid timings and cross output modulations.

Through optional expander modules more CV input and outputs can be added with support for external non euro equipment through Midi and Din Sync outputs. Please enjoy your next generation PRO workout!

Size: 8HP
Power: +12v 60ma / -12v 10ma
Depth: 32mm (approx with power header)
Outputs: 0-5v buffered low impedance. 12 bit res. 3.8khz max update freq.
Inputs: CV 0v-5v / Clock, Run - rising edge 700mV min.