Sennheiser unveils $55,000 marble-clad, valve-amp Orpheus headphones | Ars Technica
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$30,000 Headphones!?! -- Sennheiser Orpheus and HD800 (CES 2013) - YouTube
Sennheiser HD 599 Headphones, Ivory/Matte Finish, One Size : Amazon.com.au: Electronics
The Headphones that make me cry... HE-1 Review - YouTube
11 of the world's most expensive pairs of headphones | What Hi-Fi?
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New Sennheiser Orpheus Headphones Cost About $55,000
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Sennheiser HD 800
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Sennheiser HE1 overview - My perception is ruined forever! @sennheiser - YouTube
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World's most expensive headphones: Sennheiser HE 1 | news.com.au — Australia's leading news site
Sennheiser HE-1 The World's Most Expensive Headphones - Audio Affair Blog
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