Main Details
Maker ARP Brand
  • 2 × Voice
Form Factor Keyboard
Signal Path Analog Hardware
Made In United States
Date Produced 1972-1981
Notes Versions:
ARP Odyssey Mark I (Model 2800)
Produced between 1972 and 1975.
These original white-faced Odysseys used a 2-pole voltage-controlled filter (VCF) design similar to old Oberheim SEM modules. Former Deep Purple keyboardist, the late Jon Lord, was a user of the Mk I version of the ARP Odyssey.
Later Mark Is were made with the black and gold color scheme, and some may also have the CV/Gate/Trigger interface jacks installed (ARP mod kit #6800101).
These earlier units contained a greater number of internal adjustments and were slightly more difficult to calibrate.

ARP Odyssey Mark II (Model 2810-5)
Produced between 1975 and 1978.
The Odysseys I and II look and feel virtually the same. The main difference between them are the addition of CV/Gate control and a new black and gold color scheme. The 2810 introduced a beefier 4-pole VCF. This filter was similar to the Moog filter and did not last. A persistent rumor has it that Moog sued ARP over this, but no suit ever occurred. ARP and Moog came to an amicable agreement and a small licensing fee was paid by ARP for units previously manufactured. ARP soon after designed their own four-pole, low-pass filters. They came up with the 4075 filter which was used in subsequent Odyssey models. The similar 4072 was featured in the 2600, Omni, Axxe, Solus, and others.

ARP Odyssey Mark III (Model 2820-2823)
Produced from 1978 to 1981.
The Mk III featured the new 4075 filter design. The rest of its specifications are virtually identical to the Odyssey II except that the overall look and quality are further updated to match the look of the latest ARP synths with the orange and black "Halloween" color scheme. It also used a unique ARP pitch-bender design called the PPC (Proportional Pitch Control), where three pressure-sensitive buttons are used to control bend up, down, and vibrato; older Odysseys used a simple knob for pitch bending. The Odyssey Mk III is the most common Odyssey model.
Mk III Odysseys have unbalanced XLR outputs, in addition to unbalanced 1/4" outputs.

ARP Odyssey reissued by Korg in 2015
Features switches to swap between the filter designs and portamento behaviors of the MK I, MK II, and MK III Odyssey Models.
Features a Drive switch to distort the VCA.
Has Midi IN, USB Midi and an adjustable volume headphone output in addition to the I/O found on the MK III.
XLR output is balanced as opposed to unbalanced.
External design modeled after the original ARP Odyssey at 86% of the size.
Default color scheme modeled after the MK III model, with MK I and MK II color schemes offered as limited-edition models.

Switchable between sawtooth, square, and pulse waveforms with oscillator sync, 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.

Product Specifications:

Keyboard: 37-note (Slimkey, No velocity sensitivity, No aftertouch)
Maximum Polyphony: 2 voices for duophonic; normally monophonic
Controllers: Transpose Positions: 2 octaves down, normal, 2 octave up
Proportional Pitch Control: b (Pitch down) Pad: about -2 / 3 octave – (Modulation) Pad
# (Pitch-up) Pad: about +2 / 3 octave
Noise Generator: Noise Spectrum Types (white and pink)
Portamento: Maximum Speed: about 0.01 msec./oct
Minimum Speed: about 1.5 sec./oct
VCO (Voltage Controlled Oscillator): Waveforms: Sawtooth, Square, Pluse (Dynamic Pluse)
Frequency Range: VCO-1 in low freq. mode, 0.2 Hz – 20 Hz: VCO-1 and VCO-2 (audio range) about 20 Hz – 20 kHz
Warm Up Drift: 1/30 semitone from turn on max
Pulse Width: 50 % – 5 %
Pulse Width Modulation: ADSR, +45 %; LFO, +15 %
Voltage Controlled Response: 1 V/oct
Maximum Frequency Shifts: LFO sin wave, +1/2 oct.; LFO square wave, +1.5 oct.; ADSR, +9 oct.; S/H, +2 oct.
* VCO-1 is low note priority, VCO-2 is high note priority.
VCF (Voltage Controlled Filter): Types: Low pass (I: 12 dB/oct., II III: 24 dB/oct.)
Frequency Range: 16 Hz – 16 kHz
Maximum Usable Q: 30
Resonance: 1/2 – self oscillate
Voltage Controlled Response: C3 key (left edge): 0 V, C6 key (right edge) 3 V
VCA (Voltage Controlled Amplifier): Dynamic Range: 80 dB
Ring Modulator:
Type: Digital
Input Signal: VCO-1, VCO-2 (square wave)
Sample & Hold:
Command Sources: Keyboard or LFO trigger
Sampled Signals: VCO-1 sawtooth wave and square wave, VCO-2 square wave and pink noise
ADSR Envelope Generator:
Attack Time: 5 msec. – 5 sec.
Decay Time: 10 msec. – 8 sec.
Sustain Level: 0 – 100 % or Peak
Release Time: 15 msec. – 10 sec.
AR Envelope Generator:
Attack Time: 5 msec. – 5 sec.
Release Time: 10 msec. – 8 sec.
Control Input Jacks:
Pedal: ?6.3 mm monaural phone jack
Portamento Foot Switch: ?6.3 mm monaural phone jack
Audio Output Jacks:
Connector: ?6.3 mm monaural phone jack
Maximum Output Level: -20 dBu@ 10 k? load
Output Impedance: 10 k?
Connector: XLR connector
Maximum Output Level: +4 dBu@ 1 k? load
Output Impedance: 330 ?
Headphones Jack:
Connector: ?6.3 mm stereo phone jack
Maximum Output Level: 50 mW + 50 mW@ 33 ? load
Output Impedance: 10 ?
* Controllable by volume knob.
External Audio Input (Ext Audio Input) Jack:
Connector: ?6.3 mm monaural phone jack
Maximum Input Level: -10 dBu
Input Impedance: 22 k?
MIDI Connector:
USB Connector:
Type B
CV IN/OUT Jacks:
Keyboard CV (IN/OUT): 1 V/oct.
Connector: ?3.5 mm monaural phone jack
GATE IN: +3 V (minimum)
GATE OUT: +10 V, key down; 0 V all keys up
Connector: ?3.5 mm monaural phone jack
TRIG IN: +3 V pulse min., 10 ?sec. Duration minimum
TRIG OUT: +10 V pulse on key depression, 10 ?sec. Duration
Connector: ?3.5 mm monaural phone jack
Power Supply: AC adapter jack (DC 9 V)
Power Consumption: 6.5 W
Dimensions (W x D x H): 502 x 380 x 120 mm / 19.76″ x 14.96″ x 4.72″
Weight: 5 kg / 11.02 lbs
AC adapter, phone cable, mini-phone cable, owner’s manual, dedicated semi-hard case
VP-10 Volume Pedal, PS-1/PS-3 Pedal Switch


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