The treble accuracy of this headset is okay. Most of the low treble range is fairly well-balanced and accurate, resulting in vocals that should be somewhat detailed, articulate, and present. While the mid-treble range is fairly underemphasized, making vocals sound slightly dull and lispy, this is better than if it were overemphasized, which would result in piercing and painful voices. Most of the high treble range is recessed, resulting in audio that sounds fairly lifeless instead of being hissy, though this shouldn’t affect voices too much, as most voices don’t reach these higher frequencies.