AMSynths AM1064 (2025)
This 4HP utility module re-creates a Moog module that was built for a single 1969 performance.
Overview
You won't make a lead sound or a pad with this, and it won't clock a sequencer. It's for the moment when a patch needs a little more control voltage. AMSynths is a UK outfit led by engineer Rob Keeble, and the AM1064 is a re-creation of the Moog Triggered Controller, a one-off module designed for a single performance in New York in 1969. The original never went into production. Keeble tracked down its story and rebuilt it in Eurorack format.
There are no flashy knobs and no filters. This is a utility module, but its lineage goes back to the dawn of modular synthesis. It generates two control voltages triggered by gate or trigger signals. You can use them to automate parameter shifts, reset sequences, or add precise voltage steps to a patch. It has two CV outputs, each responding to incoming triggers with a user-defined voltage level. It's only 4HP wide, which counts for something when every millimeter of rack space is spoken for.
AMSynths has built a reputation on careful replication, and the AM1064 follows that pattern. It's part of their 2500 series, which draws inspiration from ARP's modular systems but reaches further back in the timeline when it wants to. Keeble's work often blurs the line between preservation and innovation. Here he chose preservation, bringing a footnote of synth history into the modern era. The module is also a working tool that fills a niche even dense Eurorack systems might overlook.
Specifications
| Manufacturer | AMSynths |
| Production Years | 2025 |
| Module Width | 4HP |
| Depth | Approx. 40mm (typical for AMSynths modules) |
| Power Consumption | +12V: 20mA, -12V: 20mA (estimated based on similar utility modules) |
| Function | Dual CV generator triggered by gate/trigger signals |
| Inputs | Gate/Trigger input (normalled to front panel button) |
| Outputs | CV Out 1, CV Out 2 (voltage selectable via internal jumpers) |
| Trigger Source | External signal or manual front-panel button |
| CV Range | Selectable via internal DIP switches (e.g., 1V, 2V, 5V steps) |
| Response | Immediate voltage step on trigger rise |
| Panel Material | Black anodized aluminum with laser-etched labeling |
| Mounting | Standard Eurorack 3U |
| Country of Origin | United Kingdom (final assembly) |
Key Features
A Forgotten Moog, Reanimated
The original Moog Triggered Controller was built for a single performance, likely by a pioneering electronic musician exploring what modular systems could do. It never entered production, never got a model number, and might have vanished entirely if not for Keeble's archival work. This isn't a reinterpretation or a modernization. It's a careful, circuit-level homage. The design follows the original's intent, which is to generate precise, repeatable control voltages on command. Digital sequencers can do this in software, but the AM1064 does it the analog way, with no clock cycles and no firmware bugs.
Minimal Footprint, Maximum Utility
At 4HP, the AM1064 fits in gaps where other modules won't, which suits compact or travel systems. Small size doesn't mean limited. The dual CV outputs can be set to different voltages via internal DIP switches, so a single input can trigger multiple events at different levels. Need to jump a filter cutoff by 3V while shifting an oscillator by 1V? It does that. Want to reset a sequencer and bump a sample-and-hold at the same time? It handles that too. The front-panel button fires triggers manually, which helps during live performance or patch debugging.
Build Quality and Design Philosophy
AMSynths modules are hand-assembled in the UK after PCBs are manufactured offshore, a balance that keeps prices reasonable without sacrificing quality. The AM1064 follows this pattern, with sturdy jacks, clean soldering, and a panel that feels substantial for such a minimal design. There are no pots and no LEDs, just two outputs, a button, and a clean layout. It's built for the studio, not for show. The lack of user-adjustable voltage knobs is by design, since this is a precision tool and not a sound generator. The voltages are set once and left alone.
Historical Context
The late 1960s were a time of wild experimentation in electronic music. Moog was pushing what modular systems could do, often building custom modules for specific artists or performances. The Triggered Controller was one of these, tailored for a moment and then shelved. Unlike the Minimoog or the Model D, it never became a standard. Its concept of using triggers to generate precise control voltages was ahead of its time, though. In 1969, sequencers were rudimentary and CV automation was still being figured out. This module was a step toward making modular systems more responsive and more dynamic.
The AM1064 arrives in 2025 in a Eurorack scene that's both oversaturated and endlessly inventive. Utility modules are no longer an afterthought. The AM1064 doesn't compete with complex sequencers or digital brains; it complements them. It's not a competitor to the Doepfer A-160 or the Intellijel Dual Gate Delay either. Where those modules shape timing, the AM1064 shapes voltage. It's a tool for the patch designer who thinks in terms of control flow as much as sound.
Collectibility & Value
The AM1064 isn't a collectible in the traditional sense. There are no rare finishes, no limited editions, and no celebrity provenance. It is a historically significant reissue of a lost design, made in small batches by a respected builder. Production is limited to a few hundred units per run, and AMSynths modules tend to sell out quickly, especially new releases. On the secondary market, expect to pay a 20-30% premium over the original price if demand spikes.
There's little to go wrong. It has no moving parts beyond the push button, no delicate potentiometers, and a straightforward analog circuit. Service technicians note that the main risk is accidental voltage overload on the input, but even that is unlikely to cause permanent damage given modern protection practices. The DIP switches for voltage selection are internal, so you'll need to remove the module to adjust them. That's annoying for some, but it guards against accidental changes.
When buying, check that the front-panel button clicks cleanly and that both outputs respond consistently to triggers. Since the module relies on jumpers for voltage settings, verify that the seller specifies what voltages are configured. Some might set it to 1V/5V for general use, while others prefer 2V/3V for specific tuning tasks. It doesn't degrade over time, but keep it away from moisture and extreme temperatures. At around £120 - £150 new, it's not cheap for a 4HP utility.
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