Yamaha HPH-MT8 Studio Monitor Over-Ear Headphone (Black)Styled with black earcups, the Yamaha HPH-MT8 Headphones provide 45mm dynamic drivers with CCAW voice coils that deliver a flat, monitor-grade frequency response of 15 Hz to 28 kHz. These studio-quality headphones sport an over-ear, closed-back design for maximum isolation, though the lightweight 0.8 lb construction, three-dimensional arm-pivoting mechanism, and adjustable head slider facilitate a comfortable fit, one that wont prove fatiguing over long listening sessions. The sound stage