Good processed KVH. Operate it currently using a Sony Z3 in connection with a vicious Aureol massif. The volume was ok without KVH, but lacking in some songs just sort of "kick-down". A touch more power so that it kicks right. This makes the Creative tidy. On max. psyched he brings I meant about 25-30 percent more volume to the ears. However, you should make sure that the input material is of good quality, 320kbps MP3 or equal flac. In addition, I think the sound clearer and more differentiated sounds. One can now better hear individual instruments. The second KH entrance are nice Gimicks determined ok for someone who needs it. But all in all a solid KHV, for a 5 rating scene is missing me the Aha effect. I've got what I expected, nothing more, nothing less. 4 stars and a buy recommendation on my part.