The Odyssey Mk I Model 2800 by ARP

The ARP Odyssey Mk I Model 2800, also known as the Odyssey Rev1 or “Whiteface,” was one of the earliest duophonic analog synthesizers produced by ARP Instruments in the early 1970s. Designed as a compact and performance-oriented alternative to larger modular systems, the Model 2800 became known for its aggressive tone, expressive pitch control, and distinctive 2-pole filter sound. Its duophonic capability allowed musicians to play two notes simultaneously, which was highly advanced for its time. The Rev1 version is especially valued for its bright, raw character and smooth filter response, making it popular in progressive rock, fusion, and early electronic music. Today, the vintage 2800 is considered one of the most collectible ARP synthesizers due to its historical importance, unique sound, and limited surviving production units.

Specs:

• Manufactured by ARP Instruments in the USA (1972–1975)
• 37-key keyboard with duophonic operation
• Fully analog subtractive synthesis architecture
• Two voltage-controlled oscillators (VCOs)
• Rev1 2-pole low-pass filter design
• Whiteface control panel layout
• Sample & Hold function
• Ring Modulator for metallic and experimental tones
• ADSR and AR envelope generators
• Low Frequency Oscillator (LFO) modulation section
• PPC (Proportional Pitch Control) pads for pitch bend and vibrato
• High-pass filter section
• External audio input for signal processing
• Monophonic audio output
• CV/Gate connectivity for analog control integration
• Approximate weight: 15 kg (33 lbs)
• Wooden side panels with steel chassis construction

Product specs