Does not work. Did you actually get anything to play with the headphones? I got it to connect but nothing plays and it is listed as disconnected in sound device manager.

What OS are you using? It worked with windows 8 but not 7.

I tried the sennheiser. Not only are they very expensive but they sound terrible. There is little to no bass and the volume is really low plus it cost a lot. I just got the Sony headphones for $240 and they are superb. They are the most comfortable headphones I have used and I am not a fan of...

I love these headphones but I can't seem to get it to pair with my windows 7 pc. 

I just picked up the MM 450 and I am shocked at the poor quality audio. It barely has any bass. I also have the Sennheiser PX 100II and they sound a lot better although they only cost $40.00. I am wondering if the MM 400 has better audio quality since it doesn't have the noise cancel feature...