SRH1840-BK,Amazon.com: Shure SRH1840 Professional Open Back Headphones - Individually Matched 40mm Neodymium Drivers for Smooth, Extended Highs and Accurate Bass, Ideal for Mastering or Critical Listening Applications,SRH1840-BK,SHURE ( シュア ) SRH1840-BK 開放型モニターヘッドホン NEWパッケージ 送料無料 | サウンドハウス,Shure SRH1840 Professional Open Back Headphones (Black) - Amazon.com