AMSynths AM8060SE (2015–2022, 2023–)

A hand-built Eurorack module that recreates the filter of the Roland Jupiter-6. Rare, finicky, and worth the money if you land one.

Overview

The AM8060SE is AMSynths' hand-wired recreation of the Roland Jupiter-6's 1983 filter architecture. It uses dual state-variable filters in series, the same topology that gave the JP-6 a more aggressive, less predictable tone than the smoother Jupiter-8. There's some grit under the surface, and a slight pushback in the resonance. It growls when asked and snarls at high resonance. The original Jupiter-6 used CEM3340 VCOs and a complex voice architecture, but its character lives in the filter. AMSynths, led by UK-based Rob Keeble, pulled that filter out and fit it into a 14HP Eurorack module.

The AM8060SE isn't the first version of this module. The original AM8060 launched in late 2010, built around the elusive IR3109 chips, the same ones used in the Boss PH-2 phaser and Roland's own filter designs. Scarcity killed production, and by 2014 only 30 units had been made. Then came the AM8060SE, a rare 2015 batch that swapped in SSM2164 chips and used salvaged momentary buttons from decommissioned Jupiter-6 synths. These are real front-panel switches with the same tactile click Roland owners knew 30 years ago. Only a handful exist, and they're nearly impossible to find. In 2022 the AS3109, a faithful clone of the IR3109, let AMSynths revive the design with updated resonance circuitry, LED-lit JP-6 buttons, and black aluminum knobs. The 2023 reissue added more refinements, making this one of the few vintage filter recreations that improved on the original in stability and usability, without sacrificing the sound.

This filter is multimode. You get three modes: a 24dB/oct low pass, a 24dB/oct high pass, and a 12dB/oct band pass (with two variations depending on switch configuration). Unlike the Jupiter-8's resonant 24dB low pass, the JP-6 filter was designed to avoid self-oscillation, since Roland's engineers knew state-variable filters could get unruly. AMSynths kept that design choice in most versions, though early test units from 2013 reportedly could self-oscillate when pushed. The production SE models stay musical even at extreme resonance, giving a controlled feedback howl rather than a runaway sine wave.

Specifications

Key Features

Dual State-Variable Filter Architecture

The AM8060SE has a pair of 2-pole state-variable filters wired in series, exactly as in the original Jupiter-6. Each SVF can be switched between low-pass and high-pass response, and the combinations create the three modes. With both set to low-pass, you get a steep 24dB/oct roll-off with a slightly nasal, vocal character. Flip both to high-pass and you get a 24dB/oct high-pass suited to rhythmic stabs or sub-bass sculpting. Set one low and one high, and the interaction produces a 12dB/oct band-pass with a resonant peak rich in harmonics, good for metallic tones, bell-like textures, or vintage synth brass. Unlike ladder filters, SVFs don't have a smooth, rounded slope. They're more immediate and more present, and they interact dynamically with the input signal.

Authentic JP-6 User Interface

Few modules go as far as the AM8060SE in copying the feel of the original hardware. The 2015 SE batch used momentary push buttons pulled from decommissioned Jupiter-6 synths, with the same click and the same slightly stiff action. The 2023 reissue uses newly sourced JP-6-style buttons, now with integrated LEDs for visual feedback. The black aluminum knobs are weighted, turn smoothly, and are machined to match the industrial look of Roland's golden era. The layout follows the JP-6's logic too: cutoff and resonance on the left, CV controls in the middle, mode switches on the right.

CV Flexibility and Signal Path Design

The AM8060SE has three audio inputs, so you can layer multiple oscillators or mix external sources before filtering. The dual cutoff CV inputs each have their own attenuverter, which allows complex modulation such as envelope plus LFO, or keyboard tracking mixed with random voltage. There's also a resonance CV input. A slow random voltage patched there gives evolving textures. The signal path is buffered: input signals are attenuated before the filter core to prevent distortion, then boosted back to modular levels on output. That keeps operation clean even with hot signals, in line with the professional-grade design of the original Jupiter-6. Because the filter doesn't self-oscillate in standard operation, it stays musical under heavy resonance, which suits percussive sounds, filtered noise sweeps, or vocal formant effects without runaway feedback.

Historical Context

The Roland Jupiter-6, released in 1983, was overshadowed by its bigger brother, the Jupiter-8. Where the JP-8 was lush and polished, the JP-6 was edgier, more digital in its architecture, with digital control over analog voices. Its filter, based on the IR3109 chip, was less celebrated than the 8's, but it had a bite, especially in band-pass mode, that made it a favorite for rhythmic, industrial, and experimental sounds. When AMSynths launched the AM8060 in 2010, the Eurorack scene was still young, and authentic vintage filter recreations were rare. Most builders were chasing the Moog ladder or the Oberheim SEM sound. Keeble's decision to focus on the JP-6 filter was both niche and visionary. At a time when self-oscillating filters were the norm, the AM8060's refusal to scream into feedback was intentional. The SE version, with its real Jupiter-6 parts, turned the module into a collector's artifact, blurring the line between reproduction and restoration. The 2022 revival, made possible by the AS3109 chip, showed that demand hadn't faded.

Collectibility & Value

An AM8060SE is a hard hunt. The 2015 SE batch, built with SSM2164 chips and genuine JP-6 buttons, is nearly mythical. Only a handful were made, and they rarely surface on the used market. When they do, prices hover between £300 and £450, depending on condition and provenance. Buyers should verify the chip type and button origin, since some later reissues may be mislabeled as SE on secondary markets. The 2022 and 2023 reissues are more available but still sell out quickly from the AMSynths webstore at £160 (inc. tax). They're not cheap, but they're fair for a hand-built, small-run module of this quality. Condition is generally excellent, and AMSynths units are known for solid construction and careful assembly. Failures are rare. The most common reported issue is intermittent connection in the momentary switches, especially on early units, and contact cleaner usually fixes it. The AS3109 chips in the new models appear stable, but long-term reliability is still being proven.

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