Rock On Audio is a small U.S. audio gear company based in Lafayette, Colorado, founded by musician and inventor Pete Lewis. The company is best known for the Rockbox personal in-ear monitor system, an affordable wired alternative to expensive wireless IEM rigs aimed at solo performers and local bands. Rock On Audio products are assembled in the United States.

The flagship Rockbox package pairs a Rockbox Limiter headphone amplifier with a power supply and the Rockon Cable, a specialized instrument cable that carries both the instrument signal and the monitor mix on a single line using a 1/4-inch right-angle instrument jack on one end and a 1/4-inch TRS connector on the other. The limiter sets a fixed maximum output level as a hearing-protection measure for players using earbuds on stage.

The Rockbox system was recognized with a Best in Show selection at Summer NAMM 2010 and has been reviewed favorably in the live-sound press for its simplicity and low cost relative to wireless IEM alternatives. The product line remains narrowly focused on wired personal monitoring and related cables rather than broader studio or effects gear.

RockOn has 1 product cataloged on Equipboard, including Miscellaneous Guitar Parts.