My little bit of input taken from my AVForums postings:
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Had an Oppo HA-2 for use with my Shure SE846's but still noticed low level background hiss (None for a Note4/S6). Can't say the design grabs me but may have to give this a try.
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Will still use the Note 4 with Direct headphone out when out & about, but with the Mojo when home/office or on PC.
Arrived in super quick time! But supposedly need to do a full 10hr charge before use
All waiting to test out. Will keep on charge for 10hrs but will do a quick test while still powered once charge light goes out (max 4hrs).
Initial impression is build quality is excellent with great size and weight in hand.
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Not going to write a detailed review as I'm not into audiophile speak and there will be loads of that kind of feedback on Head-fi soon, but this is coming from someone who used a Dragonfly v1.2 and an Oppo HA-2 with my Note 4 and couldn't really notice that much of a difference. I did like the HA-2 slightly better than Note 4 headphone out, but the hiss with the SE846's spoiled it for me.
First key requirement for me with a DAC/AMP is
no hiss. I cannot hear any hiss whatsoever with the Mojo, just like the Note4/S6/iPhone6 headphone outs.
Level of volume control is fantastic and having precise big recessed button pressing with colour change is great idea. Only need volume set to low level for both the Note 4 & the Dell XPS13 ultraportable. I prefer volume control on this to the wheel on the HA-2.
The connection with Android UAPP player recognised the DAC with no issue and the Powerball colour changed to signify the 96(Green) 192(Blue) and DSD (White) tracks I played.
Got Foobar2000 to playback dfs files but must need to do some more configuring as doesn't change based on track properties. If I set driver to 24/192 then plays with correct colour blue but doesn't sound quite as good as output from the Note 4 (but still better than the already decent built-in audio of the XPS13).
So audio from the Note 4/Mojo with 96/192/DSD tracks is the best audio I have ever heard and to my ears is a significant step-up from the Note 4 headphone out. It enhances all the great potential of the SE846's sounding even more alive/rich/full. I've got a lot more testing to do but looks like this is one DAC/AMP I will be keeping!