Most headphones, including audiophile-level sets, are made from ordinary plastic. This material is not ideal for acoustic applications as it has a tendency to store energy, sounding colored in comparison with higher-grade materials. A true reference headphone must be acoustically neutral.

Because of its surpassing strength and stiffness, aluminum is acoustically inert—the very best material for sound reproduction, adding nothing to sound quality and taking nothing away.

Aluminum’s strength is equaled by its lightness—vital for an object that will be worn for extended periods of time. Long known as the preferred solution for airplanes, racing cars, and rockets, aluminum now takes its place in top-of-the-line headphone technology.

Beautiful, light, strong, it is the first thing you see, but the last thing you hear.