Yamaha OC-1 Octaver s/n 608665 Japan in very good condition.
100% original and in full working order.

Will run of a 9v battery only and Yamaha SB-40, SB-100 and SB-200 soundboards.

Yamaha PSE series (XX-01) contain the following models ;

• Yamaha AD-10 Analog Delay
  
• Yamaha CH-01 Chorus
  
• Yamaha CH-03 FB Chorus
  
• Yamaha CO-01 Compressor
  
• Yamaha DI-01 Distortion
  
• Yamaha DI-03 Hard Dist
  
• Yamaha FL-01 Flanger
  
• Yamaha LI-01 Limiter
  
• Yamaha LS-01 Line Selector
  
• Yamaha MP-01 Mini Pedal
  
• Yamaha NG-01 Noise Gate
  
• Yamaha OC-01 Octaver
  
• Yamaha OD-01 Over Drive
  
• Yamaha PE-01 Parametric EQ
  
• Yamaha PH-01 Phaser
  
• Yamaha SB-100 Professional System Board
  
• Yamaha SB-200 Professional System Board
  
• Yamaha SB-40 Professional System Board
  
• Yamaha TB-01 Tone Booster