I've used iem(sony ex71,creative ep630,phillips 9500) for over a year. by listening about 3-4 hours a day in low volume(around 10-15 level in my iaudio x5 mp3).I noticed that I've got mild tinnitus in quiet room,especially when i put my iem on without connecting to mp3 player.after that, i tried...

HI guys I'm new to portable audio,but I've been in hi-fi world for almost 20 years and consider myself a tube-guy (esp.single-ended triode 2a3 ) so,after researching for headphones that suit my taste .finally,I come to my conclusion that IEM fits me most. So please help me find my ideal...