Great sound and cancelling performance!!!

I have tried these ear-buds and was impressed in their performance. I am very sensitive to out of phase sound which I found very annoying on the regular active noise cancelling headsets as they are not in phase all the time. Obviously this would not be possible as the distance to the inner ear would be different each time you move your head. The ear-buds don not have this disadvantage. I have worked on the design for active anti-sound systems in Fokker 100 aircraft and I must say these ear-buds work excellent. Only disadvantage I found was the disappointing signal to noise ratio from the noise cancelling amplifier (although not too much of a problem) and the lack of a 2,5 mm plug connection which most mp3 player/mobile phones have.