Yup, the heaven S really fits in easily, but not by a wide margin than the e-q7, and heaven s is easier to drive, at the same volume setting for my cowon j3, heaven s directly swept the audition pair of e-q7 off the floor, not that i compared it with my actual own subsequent pair of e-q7 though but doubt its much of a diff result LOL, Heaven S is also one of the few that i find it capable of loud music under little volume from the player, which makes it one of its key strongpoints