Amazon.com: beyerdynamic DT 770 PRO 250 Ohm Over-Ear Studio Headphones in Black. Closed Construction, Wired for Studio use, Ideal for Mixing in The Studio: Electronics
Amazon.com: beyerdynamic DT 770 PRO 32 Ohm Over-Ear Studio Headphones in Black. Enclosed Design, Wired for Professional Sound in The Studio and on Mobile Devices Such as Tablets and Smartphones: Electronics