Deep One: This is what happened to the portable subwoofer in the 'Lion's Den': Deep One makes sounds tangible: The device is placed over the neck and transmits music, gaming sounds, and other sounds directly into the body. Frederik Podzuweit, twin brother of Scalable Capital CEO Erik Podzuweit, Stefan Sube, and Scalable Capital co-founder Stefan Mittnik have Startup show “The Lion’s Den” advertised for an investment in her startup. (Photo: RTL / Bernd-Michael Maurer)