i've had a chance to test alot of se phone,especially the loudness and quality of the sound,each of them have different profile i guess...if you a have walkman phone..it does'nt mean it have the best quality and loudness..so does other series like k,z,c series..

As for w910i,its sure is not a phone with loudness and quality.And you know why?theres no such thing as 'PERFECT' Handphone model..otherwise..how do sony want to sell new models..right guys?....

So,i've test a lot of acoustic drivers thats available...and i thinks i've found the solution to tweak your w910 for better sound quality..so try my discovery and post me a reply..

try these tweaks..

1.upload luhcass w910i with w980 acoustic driver and ultra clear v1 acoustic driver.
2.adjust the equalizer as follow...15,0,0,1,16(u can tweak urself also)
3.test it on your headphones..and ofcorse use high bit rate mp3s..128 and above
And the results..feel it yourself...

PEACE!SE ROCKS!