Sony has installed several key features to these headphones to enhance their sound quality. The fifty millimeter drive units delivers a deep bass sound and a wide dynamic range (the frequency range extends down to 5 Hz.) The neodymium magnets allow for superb power at a minimum size; these magnets provide more magnetic energy than other inferior magnets. The Oxygen-free copper voice coil provides a giant amount of power handling capacity (3000 mW.) The amorphous diamond evaporated diaphragm stiffens the drivers to maximize tonal qualities and provide accurate sound for the entire sound spectrum. Both the stereo mini-plug and the UniMatch phone plug are gold-plated to make sure sound is transported fully and accurately. The gold-plated treatment also helps resist corrosion and supports the headphones' high conductivity and low noise. The UniMatch adaptor is self-cleaning and screw-on.

Excellent fit, excellent compatibility, excellent portability and excellent sound: these headphones fit the bill for a sound professional.

What's in the Box<br> Sony MDR-V900 headphones, carrying case and UniMatch plug adaptor