The open-air Yamaha HPH-150 headphones offer a neutral sound that is optimized for listening to your favorite electronic music. The 40mm drivers are encased in a rear-vented cup, ensuring true-sounding projection that won't fatigue your ears after prolonged use. The swivel mechanisms that match the angle of your ears and the velour ear pads offer a stress-free listening experience. And the HPH-150 headphones' single-cable configuration can be used with its 1/8" plug, or the included 1/4" adapter. The Yamaha HPH-150 headphones deliver hours of un-hyped music enjoyment.