おお、DropとEtymoticのコラボモデル来るのか。
3BA搭載のEVOベースって感じかな？

Shaping the ERX: An EVO Form Factor | Drop
https://drop.com/talk/114721/shaping-the-erx-an-evo-form-factor?utm_source=Iterable&utm_medium=email&utm_campaign=4761488&referer=Y99RT5&mode=guest_open&iterableCampaignId=4761488&iterableTemplateId=6462321