ARP 2823 Odyssey Mark III (1978–1981)

Name: ARP 2823
Brand: ARP

Duophonic analog synthesizer produced in the U.S. from 1978 to 1981, part of the final revision of the ARP Odyssey series.

Overview

The ARP 2823 Odyssey Mark III is a duophonic analog synthesizer manufactured by ARP from 1978 to 1981. It is part of the Rev3 series (models 2820–2823), featuring a redesigned 4-pole low-pass filter that distinguishes its sound from earlier revisions. The synthesizer has a 37-key keyboard with full-size synth action keys and a black finish with orange and white lettering. Known for its tight sound and versatility, the Odyssey platform was used by artists including Herbie Hancock, George Duke, John Lord, Kraftwerk, and YMO, contributing to numerous classic recordings.

Specifications

Number of Keys	37 Keys
Keyboard Action	Synth Action
Key Size	Full Size
Polyphony	2 Voices (Duophonic)
Synthesis Type	analog subtractive synthesis
Oscillators	2 VCOs (dual oscillator)
Filter Types	resonant low-pass filter, non-resonant high-pass filter
LFO Waveshapes	triangle and square wave LFOs
Special Controllers	three pressure-sensitive Proportional Pitch Controller buttons
Finish	Black / Orange
Made in	United States

Design

The ARP 2823 Odyssey Mark III features ARP’s redesigned 4-pole low-pass filter, which alters the sonic character compared to previous Odyssey revisions. The instrument includes oscillator sync, sample & hold, pulse width modulation, a high-pass filter, and two types of envelope generator. The control panel is black with orange and white lettering, consistent with the Rev3 series aesthetic.

Context

The ARP Odyssey was introduced in 1972, with the Rev3 series (including the 2823) produced from 1978 to 1981. The ARP Axxe (1975) was a simplified version of the Odyssey, while the ARP Solus (1980) sat between the Axxe and Odyssey in complexity. The ARP Avatar (1977) guitar synthesizer used the Odyssey’s sound engine.