I'm using the T50P with my Centrance Dacport in my office and I'm in paradise. I did the usual burning of about 150 hours and used them every day since and can only praise for the amazing SQ I'm getting. I was a bit afraid of the sizing issue but didn't have any problem finding the proper adjustement and positioning is not an issue. listening to Radiohead, Jesse Cook, Yo-yo Ma or Marillion is just fantastic. I even favor them to my DT990/600 at home. Enjoy!