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Akai AX73


Released: 1986

MSRP: $1199


Swaps the AX60 dedicated controls for single parameter based editing. Swaps arpeggiator for more keys (keeps unison mode). Loses AX60 bitimbral mode, but can split keyboard MIDI output Architecture Class: Conventional (subtractive).

Ebay Description:

The Akai AX-73 is a 73 key (velocity sensitive), 6 voice analog synthesizer, featuring resonant low (24dB CEM) and high pass filters, dual envelopes, LFO, chorus, portamento, and MIDI.


Form Factor Dimensions Weight Audio Input Audio Output Communication Port Control Input Control Output Switch Input Power
73 keys W:1152mm H:110mm D:364mm 15kg VCF:13P DIN (S612) stereo MIDI: IN OUT THRU Tape: IN OUT no no sustain program increment wired


Compatibility Multitimbral Memory Program Memory External Storage External Programming UI Input UI Output
none no 100 tape no menu driven LED display


Multitimbral Polyphony Unison Architecture
no 6 yes VCO->VCF->HPF->VCA


Effects Pan Modulator Volume Modulator Headphone
chorus no EG1|2 LFO MIDI-CC7 Velocity yes


Arpeggiator Arpeggiator External Sequencer Sequencer Memory Sequencer External Continuous Program Change
no no no N/A N/A MIDI-CC1 MIDI-CC7 Pitch-Wheel Mod-Wheel increment pedal MIDI


Key Pressure Chord Memory External Control External Sustain Key Scaling Velocity Curves
no no MIDI yes MIDI 1 1


Name Signal Class Waveform Octave Range Amplitude Modulator Harmonics Modulator Pitch Modulator Wave Assign Modulator
VCO analog pulse saw triangle 2-16′ no PWM:LFO (dedicated) EG1|2 LFO Pitch-Wheel Portamento no
Noise analog pink noise - no no no no
External analog external - no no no no


Name Signal Class IC Resonant Shape Frequency Modulator Resonance Modulator Shape Modulator
VCF analog CEM3394 yes 24dB low pass EG1|2 Key LFO Velocity no no
HPF analog CEM3394 no high pass no no no


Name Level Rate Loop Polarity Trigger Level Modulator Rate Modulator
EG1 sustain attack decay release no VCF key no no
EG2 sustain attack decay release no no key no no


Name Waveform Delay Polarity Sync Delay Modulator Level Modulator Rate Modulator
LFO Up Saw Down Saw Square Triangle Random yes no no no Mod-Wheel MIDI-CC1 no
Conventional Models
AX80 AX60 AX73 VX90 VX600