I don't use it much but the block list is effective.
The PF IX is mid-centric but it isn't actually vocal-centric. Rather the mids are strongest in the periphery of the soundstage. The vocals sitting in the nose of the horn might even be slightly recessed relative to the periphery. These really are strange headphones.
Edited by cooperpwc - 8/9/12 at 9:27pm