From private collection up for sale very rare and sought-after near mint condition 1983 Boss OC-2 Octaver.

Highly collectible first series before the name was changed to “Octave”

Serial Number 357100, Made in Japan (Black Label).

Fully working, complete with box and full paperwork.

I also throw in a boxed Boss ACA-230G Power Adapter and a genuine brand-new era-alike Toshiba 9V S-006P battery.

Photos speak for themselves.

Worldwide shipping, ask for quotes.

Follows description from Equipboard:

The Boss OC-2 "Octaver" (distinguished by the "R" at the end of the name) is the original, first-edition production run of the pedal, manufactured exclusively in Japan from its debut in April 1982 until early 1984.

Because it was only produced for roughly a year and a half, it is the rarest, most highly collectible, and most expensive variant of the OC-2 line.

Visual Characteristics

You can identify a true vintage "Octaver" variant by several distinct aesthetic traits:

• The "R" Text: The name printed on the chassis reads exactly as "Octaver" directly below the Boss logo. In 1984, Boss cropped this text to read "Octave".
• Light Brown Paint: The enclosure features a notably lighter, matte, non-metallic shade of browncompared to the darker, semi-gloss chocolate brown used on later Japanese and Taiwanese models.
• Black Base Label: The bottom features the vintage Japanese Black Label, which lists the model name, basic usage layout, and manufacturing origin stamped as "Made in Japan".
• Clear-Center Knobs: It features the early 1980s Boss control knobs, which have clear plastic indicator centers rather than the solid white line inserts used later.

Internal Components & Circuitry

• The BA634 Chip: The "Octaver" version houses the highly prized Roland BA634 integrated circuit (IC). This analog tracking chip is highly coveted by tone purists, whereas some later Taiwanese iterations used alternative ICs like the 4013. [1]
• Circuit Identity: Electronically, the actual schematic layout of the audio path did not change significantly when Boss removed the "R" from the label. The sonic difference between a 1983 "Octaver" and a 1986 "Octave" (both Made in Japan) is virtually indistinguishable, though the "Octaver" is often perceived as tracking slightly cleaner due to component tolerances.
  

Key Features:

• Analog octave pedal capable of lowering instrument's signal by one or two octaves 
• Octave 1 knob can be cranked up to mimic analog synth sound 
• Excellent quality and durability associated with Boss products
• True bypass.

Disclaimer: minor characteristics due-to-age such as light pots scratching /  hums / hisses / clicks on every 10+ years old electronic equipment for sale may occur. 

During the life span of the items, repair or restoration actions may have been made and different era / craftsmanship components may have been used.

For mentioned items are sold as-is according to the description and provider / e-commerce platform rules.

Please make sure that your shipping address is correct prior to purchasing, incorrect addresses and failing to fulfil eventual customs fees and instructions will result in additional costs.