I will be using headphones and dolby headphone with my projector most of the time.. I could bring my isolating work cans home or use my 26db isolating etymotics and sit next to train and not hear it but sadly my cinema cans of choice are my Sennheiser HD600s, these are open and hence let all other sounds in

I've made my PC near silent for this and other reasons... Thanks tho.. the 300u is supposedly nice and quiet.. but i'm worried about its handling of resolutions out of a PC..

no 1:1 mapping possible.. big prob when i'll be using PC to get Dolby headphone out..