 As of late he has used other prototypes featuring a Sustainiac (as mentioned above) or a JS model with three single coil-sized humbucker pickups.Satriani's guitars are usually equipped with his signature DiMarzio humbucker pickups, Mo' Joe and PAF Joe, and his 24-fret JS model features a signature single-coil sized humbucker called the Satch Track in the neck position.Some of his guitars are still equipped with the pickup models he favored in the past, the DiMarzio FRED and PAF Pro pickups.