DESC: The Sennheiser PXC 250 headphones represent the absolute pinnacle of portable audio design. Rich, punchy bass pours out of the “Duofol” diaphragms and with Kevlar reinforced OFC copper cabling, you don’t have to worry about severing the vital speaker wires from the earpieces. The PXC 250 headphones are built to fold and flip for quick and safe storage and with switchable NoiesGard noise compensation ambient noise is all but completely eliminated from your listening experience.