Akai AX73

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The AX73 is a surprisingly good analog synthesizer that is still considered to be widely underrated and deserving of some recognition. It's a six voice analog synthesizer with an almost identical architecture to Akai's AX60 keyboard. It also came in a rack-mount form as the VX90. It has one oscillator (VCO) per voice and allows for 3 playing modes: Poly mode uses one VCO per voice for six voice polyphonic pads, chords and strings. Dual-VCO mode stacks 2 VCOs per voice for a thicker three-voice sound. Unison mode stacks all six VCOs onto one monophonic voice for a screamin' lead!

Akai AX73 Image

The AX73 has a simple 24 dB/oct VCF (filter) and it has an interesting feature that allows the cutoff to be modulated by the VCO. It also has a flexible LFO with many variable waveforms, chorus, portamento, and a standard ADSR VCA envelope generator. But unlike many other analog synths, this machine is MIDI equipped for easy integration and use in today's modern studios. The sounds are quite nice and are adequate for use in any style of music production. It also had special inputs for use with Akai's S-612, S-900 and S-950 samplers, allowing you to run those samples through the AX73's analog filters and envelopes.

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Demos & Media

Audio Clip 1 A demo of a handful of presets, submitted by Ugo Audio.
ManualDownload the Akai owner's manual in PDF format.


Polyphony - 6 voices
Oscillators - 1 VCO per voice with saw, tri, pulse, saw+tri and noise generator
Memory - 100 patches
Filter - 1 24dB/oct resonant 4-pole filter with highpass
LFO - 1 with variable waveforms
Effects - Chorus, Pulse Width Oscillation, Detune
Keyboard - 73 keys with velocity
Arpeg/Seq - None
Control - MIDI
Date Produced - 1986