Munitio PRO40 High-Performance Headphones, Gold High efficiency, low distortion, 40mm titanium-coated dynamic drivers for a more precise and detailed sound experience throughout the entire frequency range. CODA AXIS in-line gimbal technology providing each ear-cup a full range of motion to maximize comfort without disturbing the speaker drivers. Bass Enhancing Chamber for a sustained, hard hitting true sub-bass without distortion. High-density polymer and aluminum alloy construction will sustain heavy use in any environment. Ultra-soft, lightweight protein leather over-ear pad cushions, allow for longer and more enjoyable listening sessions with maximum isolation.