Couldn't you install some third-party player on Android phones that offers EQ manipulation? It obviously wouldn't overcome limitations set by the hardware, but you could at least fiddle with the settings.
Oh, and for the record: The Samsung Omnia is a horrible DAP. I never realized how bad it sounded before I decided to get a dedicated DAP.
I have to disagree. Back when all my friends had to have iPhones three years ago the Samsung Omnia was well regarded as the best sounding smart phone on the market on many forums. The problems the Omnia has are not the SQ its capable of, but volume and usability. Its sound is well extended in both directions but the Omnia has far too low volume even for 16Ohm IEM's.
After reading your comment I decided get it out of the drawer last night and charged it to test with my K271MKII and was quite surprised. Paired with the Fiio E5 on bass boost, the SQ is excellent. Its extends deep, and is really tight with great bass articulation and separation from the highs. It definitely sounds much better than my Ipod Classic or my friends Zune, it's very dynamic. It isn't that bright so snare drums aren't as dry as on the Ipod, but are still crisp.
However, I used it with GSPlayer running Flac files out to an E5. If it makes a difference, the prebuffer in GSPlayer is maxed out and "always open output device" is checked, which basically removes any hiss being output through the strange proprietary line-out/headphone jack thing.
Its strong points are its vocals and ambience. However, its massive, ambient vocal causes soundstage congestion and subpar instrument separation. The iPod classic doesn't have congestion or separation problems; but doesn't sound nearly as dynamic and full. Texture is great, but its subpar instrument separation doesn't exactly bring out details deep in the mix. Depth is surprisingly good (much better than the iPod classic) but not great.
I have a used Samsung Omnia II coming in the mail from ebay and will compare sound quality between the two. If the Omnia II sounds as good or better it will make a much better pmp than the old Omnia, as the Omnia II has a real headphone jack and a nice amoled screen.
If not, I'll be back where I was again, stuck between whether or not I should get the Leckerton UHA-4 portable dac/amp or the Cowon X7 as a main setup...
Edit: After further listening I discovered some problems with the Omnia's sound quality which I've written above. For some people the congestion could be a serious problem; though this problem could be related to the E5, it isn't the greatest amp. Its possible this problem could be alleviiated with a better amp,but would all those extra wires be worth it? =/ ...Still, its biggest problem is its hp adapter which breaks with use and is inconvenient, not its sound quality. I wouldn't use it if I had a more convenient one that sounds as good.
Edited by Sylverant - 5/27/11 at 9:33pm