http://www.bose.com/controller?url=/shop_online/headphones/noise_cancelling_headphones/quietcomfort_15/index.jsp

I know this reply continues to leave your query unanswered, EEE, but it’s all I got. A few weeks ago I was at Best Buy (a madhouse that I avoid) as a last ditch place to find the perfect phone headset for our li’l home-based venture. While waiting for a customer service rep to clear up, I tried on this set of headphones (for the yellovit). The store noise was instantly silenced. The simulated engine noise was hushed & the swing music on the video was precision sounding [to my ears], perfect highs & bursting lows. These headphones are a little out of my range right now ..but the next time we’re feelin’ extra saucy, I will own a pair (or the next generation). Wow. Clean silence can be so elusive & Ni-i-ice..