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Amazon.com: beyerdynamic DT-990 Pro Acoustically Open Headphones (Gray, 250 Ohms) Bundle with Studio Microphone, Microphone Stand, and Hard-Shell Headphone Case (4 Items) : Musical Instruments
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Amazon.com: beyerdynamic DT 990 PRO Over-Ear Studio Monitor Headphones - Open-Back Stereo Construction, Wired (80 Ohm, Grey) : Musical Instruments
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Beyerdynamic DT990 PRO 250ohm - LIMITED EDITION (Black, Straight Cable) Headphones & Accessories - Newegg.com
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