I ve got  sony ex 700, sony ex 600 , shure se 535 , shure se 435 , sennheiser ie8. I use iphone 4s with fiio 17 amplifire , gol is , to have sound out of may head , like lisen to hiend loudspeakers , front of me ..... and I got! only sony ex 700 and fiio treble +4 , bass +4 .......You need to...