ALM PPEXP2 (2023)

Name: ALM PPEXP2
Brand: ALM

Two HP of pure clock liberation—your Pamela’s Pro Workout just got a passport to the outside world.

Overview

You know that moment when your Pamela’s Pro Workout is cooking, sequencing four different drum modules, clocking a delay, and nudging a filter—but you’re stuck because you need MIDI out, and there’s no room to patch it? That’s exactly why the ALM PPEXP2 exists. It doesn’t add new functions to Pam; it sets them free. This tiny 2HP expander unlocks dedicated MIDI, x24 clock, and Run outputs via 3.5mm jacks, all cleanly buffered and ready to drive external gear without loading down the host module. It’s not flashy, it doesn’t make sounds, and it won’t win a beauty contest—but if you’re using Pam as a central brain in a semi-modular or hybrid setup, the PPEXP2 quietly becomes indispensable.

Positioned as the leaner sibling to the more feature-rich PPEXP1, the PPEXP2 strips things down to the essentials: MIDI clock (via TRS), x24 clock, and Run (Din Sync equivalent). No extra gate outs, no trigger-on-stop—just the core timing signals you need to sync hardware outside the rack. That makes it the ideal choice if you’re not juggling multiple sequencers or complex reset chains, but still want rock-solid, dedicated outputs that don’t eat up Pam’s front-panel jacks. Both expanders connect via the same “MIDI-EX” header on the back of Pamela’s PRO Workout, and only one can be used at a time. But here’s the real win: while you can’t stack output expanders, you can pair either PPEXP1 or PPEXP2 with the AXON-1 CV input expander, giving you full bidirectional expansion without a single extra power cable. The PPEXP2 draws just 20mA from the +12V rail and nothing from -12V or +5V, making it a skiff-friendly, power-sipping companion.

What really sets this apart from a DIY adapter cable is the buffering. The x24 and Run outputs are actively buffered, meaning they can drive long cable runs or multiple destinations without signal degradation. That’s critical if you’re syncing a vintage drum machine or a modular system across a large rig. The MIDI output uses a switchable TRS configuration (Type A or B) accessible via a tiny switch on the rear of the module, letting you toggle between compatibility with Korg, Arturia, Make Noise, and other brands that use different pinouts for their 3.5mm MIDI. No more Franken-cables or guesswork—just flip the switch and go. It’s a small detail, but one that reflects ALM’s deep understanding of real-world Eurorack pain points.

Specifications

Manufacturer	ALM Busy Circuits
Model	PPEXP2
Production Years	2023–present
Module Type	Expander for Pamela’s PRO Workout
HP	2
Depth	32mm
+12V Current Draw	20mA
-12V Current Draw	0mA
+5V Current Draw	0mA
Outputs	MIDI (TRS 3.5mm), x24 Clock (3.5mm), Run (3.5mm)
MIDI Type	Switchable TRS (Type A/B)
Clock Outputs	Buffered x24 and Run (Din Sync compatible)
Power Connection	Direct from Pamela’s PRO Workout via MIDI-EX header
Compatibility	Pamela’s PRO Workout only
Expansion Limit	One output expander at a time (PPEXP1 or PPEXP2)
Weight	Approx. 30g
Mounting Type	Standard Eurorack
Original Price	$99 USD

Key Features

TRS MIDI Out with Switchable Polarity

The PPEXP2’s MIDI output isn’t just another 3.5mm jack—it’s a properly engineered solution to one of Eurorack’s most annoying compatibility wars. Because different manufacturers wire their 3.5mm MIDI jacks differently (Korg-style vs. Arturia/Make Noise), a single cable can’t reliably work across all gear. ALM sidesteps this by putting a tiny DIP switch on the rear of the module that toggles between TRS Type A and Type B configurations. Flip it, and your MIDI signal plays nice with whatever’s on the other end. No more carrying multiple cables, no more adapter chains—just set it once and forget it. It’s the kind of thoughtful design that makes you wonder why every MIDI-out module doesn’t do this.

Buffered x24 and Run Outputs

Pamela’s PRO Workout already generates a rock-solid x24 clock internally, but routing it through the front panel means sharing jacks with other functions. The PPEXP2 gives you dedicated, buffered access to both x24 and Run signals—critical if you’re syncing a second Pamela, a vintage Roland box via Din Sync, or a modular system that expects a strong gate. The buffering ensures signal integrity even over long cable runs or when splitting to multiple destinations. Unlike passive multiples, which can degrade timing accuracy under load, these outputs stay tight and consistent. And because they’re normalized to the host module, there’s no setup—just plug in and patch.

Minimal Footprint, Maximum Utility

At just 2HP, the PPEXP2 is about as space-efficient as expansion gets. It doesn’t demand power cables, doesn’t need firmware updates, and installs in seconds via the rear header. There are no controls, no menus, no blinking lights—just three jacks doing one job exceptionally well. That makes it a favorite in travel skiffs, live rigs, and compact desktop setups where every millimeter counts. It’s not a module you show off; it’s one you forget about—until you realize you couldn’t run your set without it.

Historical Context

The PPEXP2 didn’t emerge in a vacuum. It arrived in early 2023, just months after ALM launched Pamela’s PRO Workout—a significant evolution of the cult-favorite Pamela’s New Workout. The original Pam (2012) was a revelation: a multi-function clock divider, multiplier, and gate generator that could sync to almost anything and spit out perfectly timed, musically useful rhythms. But it had limitations—especially in connectivity. The PRO version fixed that with a redesigned interface, improved timing resolution, and crucially, an expansion header. That header was the key: it signaled ALM’s intent to treat Pam not as a standalone module, but as a platform.

The PPEXP2 and its bigger sibling, the PPEXP1, were the first fruits of that vision. They arrived during a period when Eurorack users were increasingly building hybrid setups—combining modular with standalone synths, drum machines, and DAWs. Clock distribution became a bottleneck. While some turned to dedicated MIDI interfaces or complex patching, ALM offered a surgical solution: expand the brain, not the rack. Competitors like Intellijel (with their Clocked ecosystem) and Make Noise (with Rene and Tempi) offered integrated timing solutions, but none matched the raw utility-density of Pam + PPEXP2 for cross-format synchronization. It wasn’t about being flashy; it was about being frictionless.

Collectibility & Value

The PPEXP2 is too new to be “vintage” in the traditional sense, but it’s already cemented as a staple in the modern Eurorack ecosystem. Since its 2023 release, it has remained in steady production, with no signs of discontinuation. That means no artificial scarcity, no secondary market markups—at least not yet. New units sell for $99–$115 depending on the retailer, and used examples typically go for $65–$85, reflecting light depreciation and high demand. Condition is rarely an issue: there are no moving parts, no trimmers, and no firmware to corrupt. Failures are exceedingly rare, usually limited to bent pins on the expansion connector or damaged jacks from over-tightened cables.

Buying advice is straightforward: check that the module mates cleanly with the host Pam’s PRO Workout and that all three outputs respond when clock is running. Because it draws power directly from the host, there’s no separate power cable to inspect. The rear-mounted MIDI switch should click cleanly between positions. If buying used, verify that the seller isn’t confusing it with the older PEXP-2 (for Pamela’s New Workout)—the two are physically and electrically incompatible. The PPEXP2 only works with the PRO version, and there’s no adapter. No maintenance is expected over time, though like any PCB-based module, it should be kept dry and free of conductive dust.

For those considering the PPEXP1 vs. PPEXP2 decision: if you need extra gate outputs or a reset trigger, go for the PPEXP1. If you just need clean MIDI and Din Sync out, the PPEXP2 is the more elegant, space-saving choice. Neither is rare, neither is fragile, and both represent excellent value for what they deliver.