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Boss OC-2 Octave – 1985 Black Label

Condition

This effects pedal is in Excellent condition. There are a few minor paint chips, scuffs and scratches on the exterior. This unit has been thoroughly cleaned and tested with 9v battery and compatible power supply. There is evidence of a small prior battery leak, but this has been cleaned up. All functions are operational. A new rubber screw grommet is installed. Build date of October 1985. The original packaging and instructions are not included. This unit requires a BOSS ACA power supply or a 9V battery. Have questions about powering Boss ACA 12v pedals? Message us!

Professor’s Notes

The black label OC-2 is the octave pedal that doesn’t just “add an octave” — it gives your signal a second shadow that moves like an instrument. It’s warm, slightly unstable in the best way, and instantly musical: single notes turn into synth-bass lines, and simple riffs become hooks. If you’ve ever wanted your rig to feel bigger without getting louder, this is one of the all-time great answers.

Professor’s Tips

• Start monophonic on purpose. The OC-2 tracks best with single notes and clean-ish technique. Think bass player mindset: one note at a time, confident attack, clean muting.
• Classic “synth bass” recipe:
  • OCT-1: ~1:00–2:00
  • OCT-2: ~9:00–11:00
  • DIRECT: ~10:00–12:00
    This gives you weight + a hint of sub without turning into a foghorn.
• Guitar vs bass balance:
  • On guitar, keep DIRECT a bit higher so it stays articulate.
  • On bass, you can lean harder on OCT-1 for that famous OC-2 thump.
• Placement is everything:
  • Early in chain (before drive/mod/delay) for the best tracking and most “synthy” response.
  • If you want a gnarlier, glitchier character, put a mild drive after it.
  • If it gets warbly, simplify. Roll back tone, play higher up the neck, and reduce chord content. The OC-2 rewards restraint.
  • Use OCT-2 as spice, not the meal. A little sub makes everything feel expensive; too much can swallow your low mids fast.

Specifications

Power: Battery 9V (x 1) AC Adaptor: ACA-Series (ACA-120, Optional)

Consumption Current Draw: 4mA at 9V

Controls: DIRECT LEVEL, OCTAVE 1, OCTAVE 2

Others: NORMAL/EFFECT Select Switch (FET Electric Switching System)

Jacks: INPUT, OUTPUT

Residual Noise: -100dBm (IHF-A)

Maximum Input Level: -5dBm

Maximum Output Level: 0dBm

Input Impedance: 1M Ohm (FET Input)

Output Load Impedance: 10k Ohms or more

Minimum Operating Input Level: -60dBm at 250Hz

Dimensions: 70(W) x 55(H) x 125(D) mm, 2 3/4(W) x 2 3/16 (H) x 4-15/16(D) inches

Weight: 400g/14oz