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Amazon.com: Geekria Apollo Copper Silver Mixed Upgrade Audio Cable Compatible with Sennheiser HD-599 HD-598 HD-579 HD-400PRO, 2.5mm Replacement Headphones Cord for Hi-Resolution Audiophile, HiFi Headset (4ft) : Electronics
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Amazon.com: SENNHEISER HD 660S2 - Wired Audiophile Stereo Headphones with Deep Sub Bass, Optimized Surround, Transducer Airflow, Vented Magnet System and Voice Coil – Black : Electronics
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Amazon.com: Sennheiser HD 598 Special Edition Over-Ear Headphones - Black (Discontinued by Manufacturer) : Everything Else
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Amazon.com: SENNHEISER HD 660S2 - Wired Audiophile Stereo Headphones with Deep Sub Bass, Optimized Surround, Transducer Airflow, Vented Magnet System and Voice Coil – Black : Electronics
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Sennheiser HD 599 Special Edition, Open Back Headphone, Black - Exclusive to Amazon & Razer Seiren X - Streaming USB Condenser Microphone Black: Amazon.co.uk: Electronics & Photo
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Sennheiser's legendary HD 599 open-back headphones are just £70 at Amazon in the Spring Sale | Eurogamer.net
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