First released in 1974, the MXR Blue Box Fuzz is one of MXR’s foundational offerings alongside the Phase 90, Dyna Comp Compressor, and Distortion . The Blue Box Fuzz takes your signal and duplicates it two octaves down for a huge, subterranean tone used to iconic effect by top rockers such as Jimmy Page and Slash. It also allows you to control how much of the effected tone you mix in with your dry signal, offering a wide range of tonal possibilities with a super simple setup. The MXR Blue Box Fu