AMSynths AM996 (2020–Present)
A tiny 8HP module that brings the CV mixing section of the Moog CP3/CP3A into Eurorack. Clean, no-nonsense, and wired like the original.
Overview
The AM996 has no knobs, no flashy lights, and makes no sound on its own. It's easy to overlook. It's also the traffic cop that keeps a Moog-style system from descending into voltage chaos. If you're building a Eurorack take on a Moog III or CP3, this is the module that makes it behave like the real thing. It replicates the CV input mixing section from the Moog CP3 and CP3A, the rare and sought-after keyboard controllers that served as the command center for modular Moogs in studios and universities. It doesn't generate tones or shape envelopes. It is wired like the original, right down to the internal IDC 6-pin bus that links it to compatible oscillator controllers like the AM901A or Behringer 921A.
This isn't a module you patch into every day for creative modulation routing. It's infrastructure. It's the junction box where your keyboard, sequencer, and modulation sources meet before going on to your oscillators. You get four front-panel CV inputs, each selectable with a slide switch and an LED to show which is active. The first three inputs are normalized to the internal bus. In a system built around Moog-style replication, like Behringer's 900-series or AMSynths' own Moog-inspired modules, that means cable-free integration. The fourth input stays independent, so you can bring in an external source, such as a sequencer or another keyboard, without disrupting the internal flow.
The AM996 doesn't try to be more than it is. It has no attenuverters, no offset controls, no digital smarts, and not even a manual offset knob. It replicates one specific, historically important function accurately. Plenty of modern recreations add features that dilute the original. This one doesn't. It's built for people who care about signal path and mechanical fidelity, and it won't impress anyone looking for sonic fireworks.
Specifications
| Manufacturer | AMSynths |
| Production Years | 2020–Present |
| Module Width | 8HP |
| Depth | Approx. 30mm (typical for AMSynths PCB-based modules) |
| Current Draw | ±12V: 20mA each (estimated based on similar utility modules) |
| CV Inputs | 4 x 1/4" jacks (normalled on first three) |
| Switching | 4 slide switches with LED indicators |
| Internal Bus | IDC 6-pin connector for CV distribution |
| Compatibility | Designed for use with AM901A, Behringer 921A, or other Moog CP3-style oscillator controllers |
| Mounting | Standard Eurorack 3U panel with M3 screws |
| Panel Material | Black anodized aluminum with silk-screened labeling |
| Origin | Designed and assembled in the UK |
Key Features
True-to-Original CV Routing
The AM996 doesn't reinterpret the Moog CP3's design. It replicates it. The four CV inputs correspond to the same sources found on the original: keyboard, sequencer, manual control, and auxiliary. The slide switches break the normalled connection when engaged, so you can select a source without signal bleed. The LED indicators confirm the active selection, which helps in live performance or complex setups where you need visual feedback without leaning in. Because the first three inputs are normalled to the internal IDC bus, you can daisy-chain multiple modules, like oscillators or filter controllers, without patch cables for basic operation. This mimics the internal routing of a vintage Moog system, where the keyboard controller directs control voltages behind the scenes.
Seamless Integration with Moog-Style Systems
The AM996 earns its keep in system-level builds. Pair it with an AM901A Oscillator Controller or a Behringer 921A, and your Eurorack case starts behaving like a 1970s Moog III. The IDC bus carries CV, gate, and trigger signals, so multiple modules can be controlled together. This kind of internal busing was a hallmark of Moog's large systems, reducing clutter and improving reliability. There's no MIDI, no USB, no firmware updates. It's analog control: voltages in, voltages out.
Build Quality and Layout
Like all AMSynths modules, the AM996 is built to last. The PCB is cleanly laid out, with through-hole components where appropriate and solid solder joints. The panel is thick, with crisp labeling and smooth switches that click reassuringly. There's no flimsy plastic and no recessed jacks. The 8HP width is tight, but not cramped. The jacks are spaced to accept standard 3.5mm cables without strain, and the slide switches are tall enough to operate with a fingertip, even in dense systems.
Historical Context
The Moog CP3 and CP3A were never mass-market instruments. They were built in small numbers during the mid-to-late 1970s and served as the core of Moog's large-format modular systems, acting as keyboard controllers with built-in sequencers, modulation routing, and CV distribution. They were expensive, complex, and finicky. When modern manufacturers began revisiting Moog's 900-series architecture, first with Behringer's 900-series clones and later with boutique recreations, the CP3's functionality was often left out. It wasn't unimportant, just subtle. No one was going to buy a $300 module only to switch between CV sources.
AMSynths saw the gap. Instead of cloning the entire CP3, a massive 5U-wide unit, they extracted its most essential function: clean, reliable CV source selection with internal bus integration. The AM996 is a practical solution for Eurorack users who want the Moog experience without the bulk. It arrived during a wave of renewed interest in analog replication, when builders were moving beyond simple VCO/VCF/VCA clones and starting to care about signal flow, grounding, and system architecture.
Collectibility & Value
The AM996 isn't a collector's item in the traditional sense. It's not rare, it has no limited editions, and it's not going to appreciate in value. Among Moog-clone builders, though, it's considered essential. New units sell directly from the AMSynths web shop for around £120 - £140 (approximately $150 - $180), depending on availability. Used units appear occasionally on Reverb or eBay, typically priced between $100 and $130, with little fluctuation. It's a passive module with no active circuitry beyond switching and LED indication, so failure rates are extremely low. There are no capacitors to dry out, no op-amps to drift, and no tuning required.
Buyers should be cautious of counterfeit or third-party clones. The AM996's simple design has inspired knockoffs, particularly “Moog-compatible” utility modules at lower price points. These often lack the correct IDC pinout, use inferior switches, or omit the LED indicators. A genuine AMSynths unit will have the correct silk-screening, a clean PCB with the AMSynths logo, and proper mechanical fit. The switches should operate smoothly without wobble, and the jacks should be securely mounted. The module relies on the IDC bus for system integration, so a miswired clone can cause ground loops or signal dropouts in a larger setup.
For anyone building a Moog-style system, the AM996 is worth every penny. It's not flashy, but it's reliable and accurate. You install it once and leave it alone.
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