The audio woes I experienced with the Momentum Wireless are limited to the Bluetooth connectivity. When I plug the headphones into my laptop or phone directly, the audio is just as pristine as what I heard back in Vegas. It's really good. However, this model is pricier than the wired cans at $500, so you're really splurging to use 'em sans cable. As you might expect, Sennheiser is hard at work on a solution and folks that think they may have a defective unit can return it. They're still under the original two-year warranty since they just recently gone on sale. The company is reviewing each complaint on a case-by-case basis to determine which environments are causing the tech to not function properly. That being said, I'll hold any detailed impressions until the set I have is swapped out for a working pair.

Think you might have an issue with yours? Contact Sennheiser to get it sorted out.