Well just remember that the Master knob is the one controlling the mono outputs and the Phones knob is the one controlling the headphone jack. M-Audio speakers normally have an Aux in, so try plugging in your iPod or CD Player and make sure they still work.
Asus R500A-RS52, Windows 8, 2.6gHz i5 -3230M, 6GB RAM,
Cubase Artist 7.0.6, Wavelab Elements 7, Focusrite Scarlett 8i6, The Grand 3, Melodyne Essential, Superior Drummer, EZDrummer and Pop! EZX, Samson CO1, Yamaha P-35, Mackie MR5mk2 monitors, and more....My tunes on: Soundcloud