The JS90HAM is a limited edition model made in honor of the 90th anniversary of Ibanez' parent company, Hoshino Gakki (the HAM in the the model name stands for Hoshino Anniversary Model). Features of the guitar include an American basswood body with a special flip flop finish, an ebony fingerboard, DiMarzio pickups and an Edge tremolo bridge. Along with the JS90HAM, special Paul Gilbert, John Petrucci and Steve Vai models were released for the Hoshino anniversary.