DiMarzio DP153F FRED Joe Satriani Signature F-Spaced Humbucker Pickup (Black)FRED has about the same power as the PAF Pro, but the unusual overtones create a sound with more crank and growl. Joe Satriani was the first player to discover and exploit these qualities, and it's been his main bridge pickup until the introduction of the Mo' Joe. FRED is really sensitive to changes in pick attack and control settings, and its distinctive tone makes a great recorded sound for both penetrating solos and tight rhythm tracks.