Now you can get a John Petrucci Signature 7-string without breaking the bank. Just like the original guitar you havea great tremolo system, locking tuners and a shred friendly neck. The JP Series 7-string comes in two different versions, the JP70 and the JP170D. Both models have a basswood body and maple neck with a rosewood fingerboard. The JP170D has a quilted maple top and comes with a set of Dimarzio LiquiFire and CrunchLab pickups.