The Audio Technica ATH-AD700X Open Back Headphones offer a Double Air Damping System (D.A.D.S) an Audio-Technica exclusive feature that enhances the low frequencies. This system helps provide a wide frequency bandwidth of up to 30000 Hz creating an energetic audio profile. Coupled with the 53mm drivers & CCAW voice coils the ATH-AD700 Xs evenly distribute the bass mid & treble ranges to create an immersive broad sound. Its not all though- the open-back design with its honeycomb aluminium casing provides an airy sound that makes the music seem alive & vibrant. For highest comfort the 3D Wing headband structure automatically adapts to your head size & removes the pressure typically felt with classic headphone designs. With a weight of only 265g the ultra-lightweight design almost feels weightless perfect for extended listening periods. Moreover the magnesium alloy construction ensures great rigidity & durability.