From the time I made this above post, I have had the same issue repeat itself a few times. Mojo powers ON, Receives the Signal (the Power ball lights up), but does not output any signal through headphone output. Not just the music, there is literally no output into my IEM, because I usually hear a faint hiss on my IE80 when I connect it to the Mojo.
I figured, this happens whenever the Mojo has not been powered on for more than a day (>36Hrs). So in order to get it to work again, I need to Press and Hold Down the
Power Button + One of the Volume Buttons, while the Mojo is in the OFF state. The issue is regardless of the source (iPhone 6, PC, Mac, Fiio X3ii).
Anyways, I have contacted the retailer for a replacement. However, wanted to check with
@Rob Watts and
@Mojo ideas, if this procedure of pressing and holding the Power Button+Volume Button is a form of device reset.