The PXC 450 is a closed, dynamic ear-enclosing stereo hi-fi headphone set with active noise compensation. Passive and active sound suppression together let the user enjoy the outstanding sound quality also in very noisy environments – ideal for airplanes and other environments with machine noise. Due to the ear pads’ 90-degree swivelling and stable locking in open and folded position the PXC 450 fits flat into the suitcase or transport case, making it the ideal travel companion. Volume adjustment, TalkThrough and on/off functions can be controlled intuitively at the right ear pad. It is of course also possible to use these headphones passively, i.e. without noise compensation and without batteries.