The first Boss pedal to feature a 'Turbo' mode for higher gain.
Released in 1985. Designed to offer both standard overdrive and a higher-gain distortion-like sound in Turbo mode. Known for lower output volume in non-turbo mode.

| Image | Name | Year Start | Year End | Made In | For Sale | Collection | View |
|---|---|---|---|---|---|---|---|
![]() | OD-2 (Japan) Japan • Black | 1985 | 1988 | 🇯🇵Japan | - | Details → | |
No img | OD-2 (Taiwan) Taiwan | 1988 | 1994 | Taiwan | - | Details → |
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