It is worth noting that InnerFidelity's review is a bit of an anomaly, as most other comparisons rank the PSB M4U 2's as "the best sounding noise-cancelling headphones". The Crutchfield advisors I talked to said that the PSB M4U 2 had the best sound quality at that price range.
Barely any of those sites have reviewed both the polk audio ultrafocus 8000 and psbm4u2. Its not a anomaly.
The ones that have bring down the rating because of the noise cancelling
Edited by zunehdrocks - 6/24/14 at 1:07pm