Call quality was more than acceptable and we could easily have a conversation in a relatively noisy environment without too much hassle, but we weren't blown away with crystal clear audio. (techradar.com)
The 450 delivers the same crystal clear audio through walls, at distances that I've found to exceed the listed 30 feet. (windowscentral.com)
It provides crystal clear audio for 3D spacial sound, allowing you to pinpoint exactly where your enemies are at. (heavy.com)