The Tektronix MP2-AUD is an internal-option, node-locked license for the MPX2-25 and MPI2-25 Prism hardware test-equipment solutions.

It provides users with a keycode to activate the MP2-AUD option, which adds enhanced audio-feature sets to MPI2 and MPX2 units including Phase, Session, Correlation, Loudness, and Dolby E status display.