Hi there,
I have a Samsung Vibrant, I'm using se530's, I know this doesn't answer your question but I though this information might help.
FYI,
Samsung did a real dumb job with this phone, limiting its true potential, don't quote me on this but I've read this phone uses the same dac as the s:flo2,
they limited the volume on the vibrant to be 86% of its full volume, (not enough omphh to drive high impedance IEMs) after researching on the xda developer forums, there a quick fix, but not a solution, download/buy the App from the marketplace called Audioboost 2, its like ~$2 i think, Basically it allows the phone to output to its full potential (100% Volume), be warned maxed volumes with no eq may damage ear drums, or so I've read. But the diff to me is night & day really pushes my 530's now....cheers =)
...oh and I believe your phone has to be rooted to used this app, not 100% sure on that thou...