mmm.....just to clarify: Mojo has THREE, not one, digital inputs - optical in (AK players etc.), USB in (micro usb in for computing devices like cellphones, tablets and laptops/MacBooks) and coaxial in (example Hifiman and iBasso players) . For output, it has an analog line-out (3 Volts line-level output) which has to be activated (through either 3.5 mm headphone out). Here is the manual of operations:
http://www.chordelectronics.co.uk/mojo/manual/Mojo-User-Manual.pdf
Yep, I got that from the initial leaks.
I'll be driving it off my laptop when at my girlfriends place via USB ... and via Toslink from the AK120, since the AK players only have optical digital outputs (that I know of).