[douglasdickel]

MXR Blue Box

Some effects, like the Uni-vibe, are somewhat subtle to the ear. But that is certainly not the case with the MXR Blue Box. The Blue Box takes your input signal, adds fuzz and then generates a tone one octave below the original note. The result is a horrifying unique, almost synth-like sound which can be heard on such recordings as the guitar solo of Led Zeppelin's Fool In The Rain.