From: licensedtoquil@gmail.com   
      
   These expensive headphones sound fine but there is almost no noise   
   canceling. I Also have a pair of cheap, older PXC310 with NoiseGard 1   
   and those DO provide quite good noise canceling.  This despite the NC on   
   the 450s being NoiseGard 2   
      
   Nowhere is it suggested that there is anything wrong with these later,   
   significantly MORE expensive headphones, other than the el-cheapo   
   speling.  In fact the reviews say the NC is quite good   
      
   I can't find anyone at Sennheiser USA who can be bothered to give me any   
   clue as to reinstalling the firmware so i wondered if anyone here has   
   any ideas on where I can find it and how to re-install it?   
      
   --- SoupGate-DOS v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)