ALM Busy Circuits O/A/x2 (ALM010)
The O/A/x2, model number ALM010, is a dual-channel attenuverter module from UK-based ALM Busy Circuits, built for Eurorack synthesizer systems. It's a utility module for shaping control voltages. Each channel can attenuate, invert, or mix signals, with a bipolar offset and LED monitoring for fine-tuning. The description from SchneidersLaden says the attenuverter adjusts a signal's phase and level across a range from X-1 to X+1. It's meant mainly for flexible "editing" of control signals, like changing the phase, level, or DC offset of an LFO. It also handles audio duties like attenuation, inversion, and mixing.
The module is 4 HP wide and draws 50 mA from the +12V rail. It also has additional ±8V DC offset controls. ALM positions it as a good companion to Pamela's NEW Workout, Pip Slope, and Tangle Quartet. Retail prices seen ranged from $100 USD (Detroit Modular) to CAD$129 (Nightlife Electronics). A used listing appeared at ctrl-mod, and a "Brand New" Reverb listing was at $124.64. Detroit Modular currently lists it as sold out. Production years aren't documented in the available record, and no owner or reviewer opinions have surfaced in the sources reviewed.
Known specs, such as they are:
- Dual-channel attenuverter / offset module
- 4 HP wide
- 50 mA +12V power draw
- ±8V DC offset controls
- Attenuation factor range: X-1 to X+1
- Silver finish
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