First International Digital (FID) today introduced its irock! 5.1 Theater Sound USB Headphones. The new headphones are PC and Mac compatible and feature six speakers, each in an individual sound chamber, which the company says “provide users with big-screen, virtual surround sound for portable home theater and PC gaming applications.” The headphones require no sound card and no software drivers are required for Macintosh. irock! is priced at US$59.99 and comes with a carry bag.