 The Ibanez JS1 (the original JS model) was based on, and replaced, the Ibanez 540 Radius model that Satriani first endorsed.Many of his guitars are made by Ibanez, including the JS1000, and JS1200.These guitars typically feature the DiMarzio PAF Pro (which he used up until 1993 in both the neck and bridge positions), the DiMarzio Fred (which he used in the bridge position from 1993 to 2005), and the Mo' Joe and the Paf Joe (which he uses in the bridge and neck positions, respectively, from 2005 to present day).