Boss Overdrives: We all love them, right? However, there is commonly some confusion among the masses regarding the guitar pedals that are aptly named "overdrive" in their line - the Boss OD-1, OD-3, and SD-1. Is the OD-1 and the OD-3 the same? Nope. Remotely? Nope. Is the SD-1 just an OD-1 with a tone control? Nope. All different from each other, but all great sounding!