The PGM90HAM was a limited edition model made in honor of the 90th anniversary of the Hoshino Gakki company which produces Ibanez guitars. The model name references this — "90HAM" stands for 90th Hoshino Anniversary Model. John Petrucci, Joe Satriani and Steve Vai also received "90HAM" models which were released concurrently. Just 337 PGM90HAM examples were sold worldwide.
Features include a basswood body with flamed maple top and abalone binding, an ebony fingerboard, a reversed headstock, DiMarzio pickups, a standard hard-tail bridge and Paul Gilbert's signature painted F-holes.