The sound quality of the headphones is excellent. While at 13,000 feet between Colorado Springs and Amarillo, Texas, I had extended opportunities to listen to some tunes. Crank it up. The Zulu.2 sounds great. The microphone is completely new too, utilizing a disc-shaped diaphragm to get great sound, directionality and noise cancellation. The clarity and presence of the mic, at least as it sounds through the intercom system, is as good as I’ve heard.