FIG. 1 is a perspective view of an audio input/output device showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view of one side thereof;

FIG. 4 is a side elevational view of the other side thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a rear elevational view thereof; and,

FIG. 8 is a plan view of the face plate thereof.

The broken line showings form no part of the claimed design.