Originally Posted by IO540
In that Transair comparison table, the attenuation figures have come from the marketing data, and a lot of that has always been bogus.
Have a look at the abnormal figure for the HME100 for example. 40db??
From personal experience I feel confident in stating that the Sennheiser has the best noise attenuation by a long shot in this price range, the main reason I bought it. However, this can be a disadvantage with a quiet stall warner, though I am yet to fly an aircraft fitted with a stall warner inaudible from this headset.