The PXC 350 is a circumaural high-end travel headphone set with NoiseGard Advance technology for active attenuation of ambient noise. The PXC 350 enables an unprecedented sound experience for people on the move, thanks to its adaptive baffle damping in combination with patented Duofol diaphragms, which prevent unwanted partial oscillation to deliver a natural, lifelike sound quality. It features the NoiseGard Advance technology. This technology advances filtration efficiency from that of the original NoiseGard system for truly active reduction of ambient noise up to 85%.