I'm a huge fan of crossfeed, and I use it with my sennheiser hd 449 all the time. To me, it really improves the soundstage in terms of depth, giving it an immersive 3d effect. However, when I tried it with my friends ultrasones , the differences were barely there; there were a lot of times when...

I'm completely new to the world of hifi, so please, put up with my simple questions. My friends (all of whom are total novices when it comes to headgear) got me a denon 2k for my birthday,and they sure sounded amazing, I hadn't realized this was what music was supposed to sound like. I...