DiMarzio DP289F Steve Vai Signature UtoPIA Bridge Humbucker Pickup (Gold Tops With Gold Poles)Using the Evolution Bridge as the basic platform, the UtoPIA Bridge was designed to focus more on the low end response of the guitar while adding thickness and body to the top end. The challenge was to still deliver the harmonics for which the Evolution is known. Upper midrange frequencies were also dialed back to produce a less aggressive attack and provide more control. The UtoPIA Bridge boasts a big, bold low end, high output, and thick top end. A