Boss Dual Overdrive SD-2 - Used,Guitar Pedal X - GPX Blog - Drunk Beaver's 14th Pedal Drop is a beautifully Evolved and Expanded take on the Lead Channel of the cult classic Boss SD-2 Dual OverDrive,Double your Dirt - A Deep Look at the Boss SD-2 Dual OverDrive.,BOSS SD-2 DUAL OverDrive Pedal - Guitar Lessons,Guitar Pedal X - News - Should Boss roll out more Dual-OverDrive Collaborations - and if so which two pedals should be combined?,