Amazon.com: beyerdynamic DT 990 Pro 250 ohm Over-Ear Studio Headphones For Mixing, Mastering, and Editing : Musical Instruments
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 : Musical