ttps://en-de.sennheiser.com/news-the-game-changer-for-closed-back-audiophile-headphones
422: ┃】【┃ 2018/01/08(月) 19:42:31.81 ID:GNyllMRK0
Sennheiser’s new HD 820 closed-back headphones will shake up the audiophile world
https://www.theverge.com/2018/1/8/16858130/sennheiser-hd-820-headphones-price-release-date-ces-2018
472: ┃】【┃ 2018/01/09(火) 18:13:57.68 ID:Jgfj316Ra
ゼンハイザー、ガラスカバーの密閉ヘッドフォンHD 820。「“開放型が最高”は時代遅れに」
https://av.watch.impress.co.jp/docs/news/1100/011/amp.index.html