ALM AXON-2 ()
A no-frills, 8HP expander that gives ALM's sequencers and effects units knobs and buttons you can reach with your hands.
Overview
Menu diving is a pain, especially mid-performance. The ALM AXON-2 won't fix that for everyone, but if you're deep in the ALM ecosystem, it helps a lot. It's not a sound generator, not a processor, not even a standalone utility. It's an extension, a tactile upgrade for four of ALM's most powerful digital modules. It might look like an afterthought on paper, but in practice it changes how you work with those units.
The AXON-2 adds four assignable CV inputs, each paired with a physical offset knob. You patch in modulation sources - LFOs, envelopes, random voltages - and set their influence with your fingers, no menu required. That's the difference between setting a parameter once and forgetting it, and riding it like a filter cutoff during a live set. The knobs allow subtle shifts or sweeping changes on the fly. Each input's attenuation and offset can also be adjusted digitally via the host module, so you get both macro and micro control. Set it in software first, then tweak it with hardware.
The two large, clicky performance buttons may be the best part. They aren't plain momentary switches. They're assignable function keys that can be mapped to anything the host module supports. The exact functionality depends on firmware and host, but the idea is consistent: immediate access to the functions you use most, without reaching for a tiny encoder or scrolling through screens.
Specifications
| Manufacturer | ALM Busy Circuits |
| Type | Eurorack Expander Module |
| Size | 8HP |
| Power Consumption | +12V: 50mA, -12V: 30mA |
| CV Inputs | 4, freely assignable |
| Manual Controls | 4 offset knobs (one per CV input) |
| Buttons | 2 assignable performance buttons |
| Host Modules | SQUID SALMPLE, MFX, Pamela’s PRO Workout |
| Firmware Requirement | Pamela’s PRO v120+, SQUID v187+, MFX v105+ |
| Outputs | MIDI-out, CV output for additional control |
| Construction | Made in England, Skiff friendly |
Key Features
Four Hands-On CV Inputs with Offset Knobs
The AXON-2's primary function is expanding modulation capacity. Each of the four CV inputs can be assigned to any parameter the host module allows - filter cutoff on MFX, step probability in SQUID, LFO rate on Pamela's PRO - and then fine-tuned with the corresponding knob. That knob acts as a manual offset, adding or subtracting voltage from the incoming CV signal. So it's more than a trim; it's a performance control. Say you've patched an LFO into a delay feedback parameter on MFX. You can set the LFO depth in the menu, then use the knob to override the center point manually, pushing it into self-oscillation for a moment, then backing it off.
Two Assignable Performance Buttons
The AXON-2's buttons are large, mechanical, and satisfying to press, and they're designed for stage use. Their function depends entirely on the host module and firmware, but common uses include tap tempo, pattern advance, mute groups, reset, or navigation shortcuts. On Pamela's PRO Workout, for instance, you might assign one to "reset all sequences" and the other to "tap tempo." The buttons don't generate CV or gates by default. They send digital commands to the host, which interprets them based on context. That means their utility grows as firmware updates add new features, which passive expanders can't match.
Seamless Integration and Power Efficiency
The AXON-2 is unobtrusive. It draws all its power directly from the host module via the backplane, so there's no extra power cable and no additional strain on your bus board. It's just 8HP with a skiff-friendly profile, and it tucks in beside its host. The build quality is industrial: sturdy PCB, reliable jacks, and a faceplate that matches ALM's clean, utilitarian look.
Collectibility & Value
The AXON-2 isn't a collector's item in the traditional sense. It's not rare, not discontinued, and not particularly flashy. Within the ALM ecosystem, though, it's increasingly seen as essential. New units are listed at £159.00 on Rubadub, though other listings vary, some as high as £190.80, likely due to regional pricing or retailer markup. Used units aren't widely tracked, but they tend to sell quickly when available. There's no significant secondary market speculation, but scarcity can occur during ALM's periodic production runs, especially if demand spikes for Pamela's PRO or SQUID.
Owners report that the module makes their existing gear significantly more playable. One Reddit user put it bluntly: "Turns Pams to 11, provides more control and makes Pams so much more playable." The biggest barrier isn't cost or availability. It's firmware. The AXON-2 requires updated firmware on its host modules (Pamela's PRO v120+, SQUID v187+, MFX v105+), so if you're running older gear, you'll need to update before the expander works at all. That isn't a flaw, but it catches new users.
When buying used, check that all four knobs turn smoothly and that the buttons click cleanly without wobble. Verify that the host recognizes the module. Some users report issues with poorly seated connectors, though reseating the module usually resolves it. It doesn't process audio or generate CV, so there's no "sound" to evaluate, but functionality is easy to test: assign a CV input to a visible parameter and tweak the knob. If it responds, you're good.
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