Audio-Technica Now Offers Its ATH-PRO700MK2 and ATH-PRO500BK High-Performance Headphones for DJs and Consumers STOW, Ohio, Dec. 19, 2011 (GLOBE NEWSWIRE) -- Audio-Technica now offers its ATH-PRO700MK2 and ATH-PRO500BK Professional DJ Monitor Headphones, two high-performance models that are designed for DJ use,...