The Odyssey is a two-oscillator analog synthesizer, and one of the first with duophonic capabilities (the ability to play two notes at the same time). All parameters, including a resonant low-pass filter, a non-resonant high-pass filter, ADSR and AR envelopes, a sine and square wave LFO, and a sample-and-hold function are controllable with sliders and switches on the front panel.

Features

• Switchable between sawtooth, square, and pulse waveforms with oscillator, a ring modulator, and pink or white noise. 

• Pulse-width can be modulated manually or with the LFO or the ADSR envelope generator. There is a (static) high-pass filter, as well as a voltage controlled low-pass self-oscillating filter.
• The filter can be controlled by either of the two envelope generators, an ADSR (attack, decay, sustain, release) and a simple AR (attack, release) and modulated by the LFO, sample-and-hold, the keyboard, or a separate CV (pedal) input on the back panel.
• The Sample/Hold input mixer can be used to route the output of the VCOs to the FM input of VCO 2 and the VCF, enabling audio frequency FM.

Odyssey Mk I (Model 2800)

ARP Odysseys produced between 1972 and 1975, referred to as Mk I, were white-faced Odysseys that used a 2-pole volltage controlled filter, which were similar to Oberheim SEM modules. 

*Excellent Working and Cosmetic Condition with a couple tiny cosmetic blemishes.