Yamaha HPH-MT8 Studio Monitor Headphones Yamaha HPH-MT8 headphones are designed to deliver accurate response and high-resolution sound with precise stereo imaging, and faithfully reproduce every nuance of the mid to high-end with tight bass. Yamaha has applied decades of accrued knowledge and expertise in professional and high-end studio equipment manufacturing to the design of each and every acoustic component in these headphones. Closed-back, circumaural design for excellent isolation. Durable ABS housing and rigid die-cast aluminium support-arms for use in the toughest working environments.