Audio-Technica has introduced a straight-cable version, ATH-M50s, of its flagship ATH-M50 headphones. Designed to provide an exceptionally natural response for professional monitoring/mixing, the headphones feature a closed-back, collapsible design with 45 mm neodymium drivers, circumaural ear pieces (180° swivel) and luxuriously padded ear cushions. A straight cable at the left earpiece terminates to a gold-plated mini-plug with included screw-on ¼" adapter. <br/>Audio-Technica’s sophisticated driver technology and superior components deliver exceptional power handling and very high SPL capabilities while maintaining clarity of sound throughout their extended range, with deep, accurate bass and outstanding high-frequency extension. The headphones feature proprietary large-aperture drivers with neodymium magnet systems for ultra-efficient signal transfer. <br/><a href="http://www.audio-technica.com/cms/happenings/8348746d4fb8725b/index.html" target="_blank"><b>Read what top industry professionals are saying about the ATH-M50.</b></a>
I have read many great reviews, but have not seen a definitive answer if a smartphone will drive these headphones properly. I see they are rated at 38ohm and that is supposed to make them pretty sensitive, but I just kind of want a straight answer.