Aviation headset test: David Clark PRO-X2 v Bose A20 v passive headset

An objective comparison of the David Clark DC PRO-X2, the Bose A20, and a passive headset. Real, in flight, sound recordings and analysis. The stated mass of each headset may be higher than that given by the manufacturer. We weighed each device on an electronic scale and a small additional mass of cabling immediately adjacent to the headsets will have been included. My comparison of in-ear sets (Clarity Aloft, Phonak, Puretone Nanocomm and Faro) is at    • In-ear aviation headset comparison: Clarit...