 Delfi Sound Inc. (株式会社デルファイサウンド) It is a recording studio, album production, and music label company.The company was established in April 1, 2005 as Marvelous Studio Inc. (株式会社マーベラススタジオ)

On March 22, 2005, Marvelous Entertainment Inc. announced the establishment of the subsidiary Marvelous Studio Inc., effective on April 1, 2005.On January 22, 2010, Marvelous Entertainment Inc. announced transferring 100% of its Delfi Sound Inc. shares to Amuse Capital Inc. (株式会社アミューズキャピタル), effective on January 29, 2010.