guys a leading tech magazine in my region rates k790i as best music phone !!!!
they say it beats even its Walkman counter parts...!!!

but i am myself using w880 acoustics !! hehe lol !

well for all sorts of k550i and w610i modding u can ask me.. !!

i recommend u to use xaero ma loud.. its the best loud acoustics !! its bass is good..
it beats sunfire7 !!!! and got better quality then sunfire7 loud acoustics...