For the early years (1987-1989), James's main guitars were a couple of original Fender Telecasters. One is black and the other is a red-orange sunburst. Both come with the Seymour Duncan pick-ups. His black Tele appears on the Fox television documentary "Full Circle" (band practicing their pre-Gish songs).
Late 1989, James bought two amazing and expensive guitars, which became his main axes for about a decade. Both guitars are the Gibson Les Paul Customs. The first is silver sunburst 1980's with standard humbuckers. The second one became sort of Iha's trademark: "black beauty" Les Paul Custom with gold hardware and an ebony fingerboard with pearl block inlays and Gibson standard 490R, and 498T humbuckers.
James bought his first Les Paul from the guitarist from the band Catherine.
During the Gish tours, he used one guitar for standard tuning, and the second one for drop-D ("Window Paine", "Silverfuck"

.