Many guitar players — at some point — can't help but fall under the spell of the sounds found on classic rock albums of the mid- to late '60s. Players like Jimi Hendrix, Eric Clapton, Jeff Beck, Jimmy Page, Pete Townshend and Robby Krieger were synonymous with wah, fuzz, univibe and/or tremolo. Throw George Harrison and Brian Jones into the mix and you get sitars and other sound- (and mind-) altering effects. They were always experimenting, changing things up, trying to top each other.