The AX7521 is a seven-string AX series solid body electric guitar model introduced by Ibanez in 1999. It was often referred to as the AX7-521.
The AX7521 features a crystal cut mahogany AX-style body bolted to a maple and bubinga neck with a 22-fret rosewood fingerboard and dot inlays. Components include dual Ibanez Vintage humbucking pickups with individual volume and tone controls and a fixed bridge.
The AX7221 is a similar model which has slightly different components. The AX7521 was discontinued after 2002.