Ok, so now I have got the Meizu (E3) and have been able to do some comparison between Iaudio U2, Meizu E3 and Monolith MX-7000 (also called Monolith Premium).
The Meizu is somewhat clearer then Iaudio but don't have the same bass imo, there is the option to raise bass in both eq and "p.bass" (don't know what p stands for) but to me, it sounds muddy if I raise it too high. Overall, I prefer the Meizu's sound signature over Iaudio.
Monolith however, beats both Iaudio and Meizu hands down. It provides clarity, detail, bass in another league accourding to me. The male vocals have a totaly different depth and crisp to it then the other two. Now, if I manipulate the sound signal on the Meizu with the eq a lot, I manage to get closer to the sq of the monolith, but since the monolith's sound signal is untweaked in 'flat' eq, this tells me something about the sq and amazing decoding abilities of the monolith. Acctually, I am willing to go as far as saying that a original wav file on the Meizu sounds more or less as a 256 kbps mp3 file on the monolith. I have an old Panasonic CD player that I used to compare the wav file on the meizu with, and the meizu sounds about the same when playing the exact same wav file. After I encoded that wav file to a 256 kbps mp3 file to run on the monolith (monolith doesn't play wav), I still thought it sounded a little bit better on monolith. I am soo amazed by the sq of the monolith that I don't know what to do
. But it has some flaws. I think the Meizu has way better build quality (the buttons on monolith are plastic and a little loose and if one shakes the player it sounds as something is loose inside the player) and the koreans that put the monolith together obviously don't know too many words in english. In general, I feel the monolith will brake unless I treat it like a baby (not the aluminium shell though, which is very sturdy - but everything else - it is kind of like a tank, if you run it into something that won't give in to the force, the person(s) inside will get crushed against the tank's inside *I know, really bad comparison but it's late
Any way, this concludes my comparison and sound quality wise, monolith is still unbeaten.