I could see myself being happy with the PHA3, plugged into the sources and components I have.  A second, extended listening to the Mojo changed that.  I'd urge anyone contemplating purchasing a PHA3 to audition the Chord Mojo as well.    Just to reflect, there are 77 pages of discussions on...

Just sold my PHA 3 and bought a Chord Mojo.  Couldn't be happier.  I had the opportunity to listen to both extensively, on my JH13 Pro custom IEMS, Audeze LCD 2.2 on-ears, as well as my home audio setup as stand-alone DACs, and the Mojo beats the PHA3 in the areas of sound staging, clarity, low...

I've chancedd upon a Chinese seller of protective silicone cases for the NW-ZX2, at:   http://www.aliexpress.com/store/1158798   I can't seem to upload photos of the cover however.