Audio Technica ATH M50 Headphones: The ATH M50 are Audio Technica's flagship studio phone, and they maximum isolation and exceptionally natural response and very high SPL capabilities, while maintaining the clarity of sound throughout the extended range. The headphone feature proprietary large aperture drivers, 45mm to be exact, with neo dynium magnet systems for ultra efficient signal transfer. It is a collapseable design with swivelling ear cups, and one of the things we consistently hear about these headphones is how well these translate actual studio monitors, so we have some very high end engineers who that mixing projects on these headphones. That's the ATH M50 professional studio monitor headphones.