Amazon.com: beyerdynamic DT 990 Premium Edition 250 Ohm Over-Ear-Stereo Headphones. Open design, wired, high-end, for the stereo system : Electronics
Amazon.com: beyerdynamic DT 990 Pro 250 ohm Over-Ear Studio Headphones For Mixing, Mastering, and Editing : Musical Instruments
DT 990 pro : r/HeadphoneAdvice
Amazon.com: beyerdynamic DT 990 Pro 80 ohm (Grey) Over-Ear Studio Headphones for Mixing, Mastering, and Editing (with Extra Black Earpds Bundle) : Musical Instruments
Beyerdynamic DT 990 PRO vs AKG K702 Side-by-Side Headphones Comparison - RTINGS.com