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Amazon.com: beyerdynamic DT 990 Pro 250 ohm Over-Ear Studio Headphones For Mixing, Mastering, and Editing : Musical Instruments
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Amazon.com: beyerdynamic DT 990 Edition 32 Ohm Over-Ear-Stereo Headphones. Open design, wired, high-end, for tablet and smartphone : Electronics
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Amazon.com: beyerdynamic DT 990 PRO 250 ohm - LIMITED EDITION (Black, Straight Cable) : Musical Instruments
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Beyerdynamic DT990 32 ohm review - Crisp sound with perhaps a touch of Grey "EQ" Poupon (5megapixel photos) | Headphone Reviews and Discussion - Head-Fi.org
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