What kind of imaging does a great set of headphones provide? A good set of speakers allows me to hear to music presented in front of me with the same depth that I hear at a live performance. I can imagine instruments and voices spatially. However, with my new Sennheiser HD 650s, the imaging is completely different. I like the clarity and detail, but I feel as though I am listening to the music from the perspective of the performing artist rather than the audience. It sounds like I am in the middle of the orchestra or band. This is similar to listening to speakers in multichannel mode rather than stereo. But I find it very strange that vocals seem to be coming from overhead. It is like I am kneeling before the vocalist and she is singing directly over my head. Is this normal?