Ok one thing I forgot to state, which is QUITE important, especially to you.
I get 0 distortion on all 3 amps.
The ZO2 on max contour, on high/max low gain -> 0 distortion, pure bass inclusion.
Also the contour doesn't screw the mids or highs.
Although the bass because more overpowering -> ie with the MG7's
With the D2K's though, as they are VERY CAPABLE, i lose no mids nor any highs - simply adds to the bass like a baws
Today's report:
Little to no EMI interference with the ZO2 with my phone.
The A10 was unbearable, to the point that I got the amp out, and put it in my other pockets, disconnected on the way back home from work.
E11 won't test, and don't know - but i trust clieOS's review
I also have to say:
MG7 + ZO2 is brilliant - adds that mid-bass that was lacking vs my TFTA's -> this might be the perfect earphone setup for me now...!
Although, it doesn't go without saying the MG7's soundstage is pretty closed in - then again i get good isolation for that "flaw"