Audio Technica ATH-WS70 Solid Bass Over-Ear Headphones with Aluminum Housing (Discontinued by Manufacturer) Solid Bass System with newly developed Double Air Chamber System delivers impressive bass Precision machined aluminum housing for increased rigidity eliminates undesired vibrations for powerful sound reproduction Soft insulating ear pads prevent background noise for a more enjoyable, impactful listening experience Smooth, easily adjustable headband slider ensures a comfortable fit 40 mm drivers reproduce powerful sound