after weeks of lurking and reading the thread from page 1, finally i went to a local store for two days in a row to audition X5 and DX90. ended up pulling the trigger on DX90.
with my unique melody Mentor, i find that X5 presents a more (for lack of a better word) "in your face" sound compared to DX90. like it has more punch, and the bottom end feels (slightly) more weighty. but on day 2 i grow to fond DX90 more. the trebles of DX90 feels a little bit hurting at first, but then i resolved by assessing this characteristic as more details compared to X5 which somewhat put some details on the trebles a little bit on the back seat (in my opinion). pardon for my lack of knowledge in putting a word for this impression. but the store owner said that what i described above as "X5 has warmer sound compared to DX90".
so regarding the sound i feel that X5 has more punch, but DX90 has better (or should i say more natural?) presentation in putting the layers of the instruments in the headstage array. after a few days i started to get used to the treble and now in love with the overall sound, detail, separation and especially headstage and presentation of DX90. i'm starting to more appreciating the process of producing and mixing music as i realize details and sound layering that i didn't notice in my previous sources. sometimes i (just a little bit) wishing for the more punching bottom of X5, but i think DX90 has more extension regarding the low end. (or maybe this is just my feeling? sort of self-justification for already chosen DX90? hahaha)
i love the wheel and the feel of X5 in my hand better than DX90. but then again the sound wins (in my ear).
compared to my previous sources, which is iDevices (iPod nano 6g, iPhone4, iPad mini) and playstation vita slim, the difference regarding the soundstage is like chatting with some people in an elevator compared to chatting with some people while sitting in the dining table. DX90 has more space and proper placement, while idevices feels more cramped. vita slim sounds better for me than iPhone/iPad though. feels like vita is slightly bigger and has more (very slightly) authority in presenting the sound. but of course they all lags (way) behind DX90 (and X5).
the difference between iDevices and DX90/X5 with my v-moda M100 somehow i don't find it as impressive as with Mentor, but then again my M100 is not particularly picky.
on an added note, with iPod nano 6g i find Mentor has better detail and headstage than M100 but the M100 gets me dancing and singing in excitement (i listen to ALAC/AIFF post rock/rock in general, progressive house and trance, and a little bit of classical). it feels like the energy of the music gets through to me in nano+M100. but when i tried Calyx M with Mentor, boy that guy can sing! i get the excitement and the detail and the soundstage. but then again Calyx M is unwieldy and simply cost twice the price. but anyways i'm happy with DX90. got the detail and soundstage, while the excitement is halfway there (or maybe almost there). if one day DX90 gets an update with cover flow, then i wouldn't ever trade it for calyx or anything else. (yes i do listen to music while staring at the cover art)
sorry for the long post folks. just trying to be thorough. hopefully it makes sense though. hahaha
one more thing, when i turn on and turn off DX90 there is a faint pop/click from inside the DX90. anybody knows what is that? is it dangerous?
Edited by clubberkamar - 6/21/14 at 8:54am