Akai AX60 (1985/1986)
Eleven kilograms of hands-on analog, built the year the digital tide came in.
Overview
The Akai AX60 is a six-voice analog polysynth from 1986. The front panel is a wall of sliders, knobs, and buttons, with status LEDs showing what's engaged. You can read a patch without a single menu. Owners report it feels like programming a synth should: no hidden functions, no shift-key gymnastics for basic edits, just controls that do what they say.
The architecture is single-oscillator per voice — six VCOs total — which in practice means the AX60 leans on its filter and its built-in chorus to do the heavy lifting. That 24 dB/octave resonant lowpass filter also has highpass capability, and it takes external modulation from the oscillator itself, a trick that adds grit and movement to otherwise simple waveforms. It's a compact signal path, but not a shallow one.
The keyboard is where the AX60 shows its compromises. It has sixty-one keys, C to C, unweighted and not velocity-sensitive. It's a synth-action keybed that will disappoint anyone arriving from a velocity-capable instrument. Contemporary commentary on versatile synth arpeggiator functions, as covered in Sound on Sound (April 1996, p.34), noted how an arpeggiator could make inspirational note sequences a cinch for players who were all fingers and thumbs. The trade-off is a lower price and a lighter chassis. Collectors also flag the front panel buttons and LCD screen as common failure points, particularly on units that haven't been serviced in decades.
The AX60 has a bitimbral split, a variable multi-mode arpeggiator with a hold function, and a stereo BBD chorus that gives the single-oscillator voice a depth it couldn't reach on its own. Sixty-four patch memory locations is workable for a performance instrument. There's also the sampler input, a proprietary interface that lets Akai's own S-612, S-700, X-7000, and later S-900/S-950 samplers route their audio through the AX60's filter and VCA. It's an early hybrid workflow.
Key Features
Curtis CEM3394 Voice Architecture with Filter FM
Six voices, six CEM3394 chips, each one integrating the oscillator, filter, amplifier, and envelope generator into a single package. That keeps the voice path tight and consistent, and it gives the AX60 its characteristic tone, the "gritty Curtis bite" that players who know the chip family recognize immediately. What separates the AX60 from other CEM3394-based instruments is filter FM: the oscillator can directly modulate the filter cutoff frequency. That isn't resonance pushed to self-oscillation. It's harmonic instability introduced on purpose, and it lets simple patches evolve into snarling leads or metallic pads. It's a rare routing for an analog polysynth of this era.
Dedicated Front-Panel Control with LED Feedback
Nearly every parameter - oscillator waveform, filter cutoff, envelope times, LFO rate - has its own slider, knob, or button. There's no menu diving and no shift functions for basic edits. The VCF and VCA envelopes share a toggle to switch between attack/decay and release/sustain parameters, which is the only real compromise in an otherwise literal layout. Status LEDs next to many controls confirm activation states at a glance. Owners praise the AX60 as one of the most intuitive programmable synths of its time.
Built-in BBD Chorus with Fast/Slow Modes
The chorus uses MN3009 bucket-brigade chips and delivers a stereo analog swirl with fast and slow modulation rates. It's the effect that makes single-oscillator patches sound like more than they are. Strings thicken, pads shimmer, and bass patches gain a width the raw voice can't produce. The cost is noise: sources suggest the chorus contributes to a higher noise floor, especially when external sampler inputs are in use.
Bitimbral Split Mode with Flexible Voice Allocation
The AX60 operates bitimbral, splitting the keyboard at any point so two different patches play in different registers. Voice allocation is the standout detail: users can assign 0-6, 2-4, 4-2, or 6-0 voices to each zone. A bass patch in the lower register can have four voices while a lead above gets two, or vice versa, and the synth won't steal voices it doesn't need to. In an era when polyphony was precious, this kind of allocation was rare.
Unison Mode for Maximum Thickness
Unison stacks all six voices across the keyboard, turning a single-oscillator synth into something considerably more aggressive. It's not true unison in the per-voice-detune sense, since the AX60 lacks per-voice pitch modulation. But six oscillators hitting simultaneously, especially with the chorus engaged, produce a massive sound. Collectors note it gives the AX60 a punch that its architecture wouldn't otherwise suggest.
Sampler Integration via 13-Pin DIN Interface
A 13-pin DIN sampler input lets Akai's own S-612, S-700, X-7000, and later S-900/S-950 samplers feed 12-bit samples into the AX60, where they can be routed through its filter and VCA. With the right cable, a sample becomes an oscillator you can shape with the same envelopes and modulation applied to the internal voices. Certain vintage Akai samplers can be routed through the AX60's filter and VCA this way, effectively turning the synth into an analog processor for digital sources.
Historical Context
The AX60 was manufactured in 1986, a year when analog synths were being eclipsed by digital FM and sample-based instruments. Akai positioned it as an answer to the Roland Juno series and Yamaha's DX series, borrowing the Juno's hands-on interface and built-in chorus while offering deeper programmability and bitimbral operation. Unlike the eight-voice AX80 that preceded it, the AX60 replaced bar graph displays with dedicated sliders and swapped chord memory for a multi-mode arpeggiator. It was one of the last true analog polysynths of the mid-1980s. Its power supply is shared with the AX73, a detail that matters more in the service bay than on the stage.
Collectibility & Value
As of April 2, 2026, the used market price for an Akai AX60 sits at $788.57, according to Equipboard. That's a climb from 2011, when prices ranged from $300 to $600, and lower-priced units often required repair for common failures. The AX60 is described as a "revered classic" and a "beloved choice for synth enthusiasts," praised for its hands-on interface and value as a "bargain buy" in the analog polysynth market. Owners note its "alive" character and fun, immediate programming make it a standout even among more famous contemporaries.
Stuck front panel buttons and failing LCD screens are the common failure points, and the power supply, shared with the AX73, is known to cause tuning instability if not maintained. Lower-priced examples almost always need work. The sound itself draws criticism too. Capable of warm strings and deep basses, the AX60 can also come across as harsh or metallic, especially when the chorus is engaged. Buyers should expect to budget for service, and should verify that the front panel responds cleanly before committing.
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