From the overdriven sounds of Jimmy Page and Tony Iommi to the out-of-this-world prog tones of David Gilmour and Alex Lifeson, the Seventies were pivotal in creating some of the guitar sounds that are still being ripped of today's class of rock guitarists. Whether you're putting together the ultimate Pink Floyd or Led Zeppelin tribute band or just trying to add a bit of vintage flare to your modern-rock masterpiece, the pedals on this list are sure to help you recapture some of that groovy Seventies magic.