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Akai AX-80





audio demo trend price : 800€
manual   demo video comments

AKAI AX-80 programmable polyphonic synthesizer (1984)


Analog synthesizer from the mid-eighties produced by the famous sampler company

ax80 display

ax80 display

info KEYBOARD (weight: 18 kg) 61 velocity keys,
The main panel offers 56 buttons, 4 knobs, a large rotary encoder for values enter. All parameters values are displayed on a special glowing bars display incredibly cool eyes-candy device.

Back panel terminal connectors:
- mono out
- headphones
- Midi and
- tape interface
- sustain pedalswitch input
- program change pedalswitch input

edit VOICE the synth manages 8 voices based on subtractive synthesis.
Each voice is composed by 2 DCO oscillators + 1 sub oscillator.
TECH: sub features a PWM linked to DCO1 PWM values.


oscillator DCO1 DCO2
octave range 16' 8' 4' 16' 8' 4' 2'
waveforms saw / pulse / saw+ pulse mix saw / pulse / saw+ pulse mix
detune no yes
PWM yes no
sub oscillator yes (1 octave lower) no
mix volume yes yes

adsr CROSSMODULATION the DCO can be synched in 2 different ways:
- soft sync mode
- hard sync mode

dco data

there are 2 EG in total and both are 4 stages ADSR:
- EG1: amplitude for both DCO
- EG2: filter (lowpass)
The Keyfollower function is pretty brilliant for its age and features 99 different levels.

features 2 mode filters:
- lowpass at 4 poles also based on 8 excellent CEM 3372 (IC act also as EG)
- static highpass
The Key follow function tracks the cutoff notes with variable range from 0 to 150%.

cem curtis 3372

filter data

lfo LFO there are 3 modulators in total sharing same frequency (range from 0.1 to 20 Hz):
- OSC1 pitch
- OSC2 pitch
Each modulator offers 4 waveforms (saw up, saw down, triangle and a pulse) and a delay time function.
TECH: modulation wheel triggers LFO using either MWHEEL OSC or MWHEEL VCF.

basic implementation:
- pitch bender
- modulation
- sustain
- key velocity
- program change

memroy MEMORY holds:
- 32 ROM preset
- 64 RAM slots
Sounds can be saved only using tape interface.
TECH: internal RAM system uses a BR-2330 lithium battery, soldering skills are needed for replacement

lithium battery

midi MAINTENANCE keyboard panel part lacks a good spacer system, in fact, after many presses, underneath contacts may break.

inside the akai ax80


audio demo

Demo note:
track 1 with Roland tr606

effet Soundcloud Akai Ax-80

ax80demos 3 tracks  


fan ax80 advertisement Akai AX-80 Sounds By: Synthpro New Akai AX 80 demo
fan ax80 advertisement Akai AX-80 Sounds New Akai AX 80 demo

akai ax80 synth



Unlike the others AX-VX series machines, the Ax80 does not feature the VOICE IN connector that processes signal from hardware samplers like S900.



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high tech







Discover the ax80 most terrible competitor!

Roland Juno-60



NO AX80 for sale
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akai ax80 side view ax80 behind view synthesizer


- filter
- cool display


- tape storage
- weight
- lacks portamento and unison


"Really different and more harsh than Roland! analog pads and sweeps are just great. Really underrated."


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all snapshots, sounds, texts copyright Polynominal.com / Eric Pochesci

Akai ax80 4.5 out of 5 based on 140 ratings. price €800