Talking about Mark Levinson, he played a crucial role in creating high-end audio HD

Thumbnail photo by Brent Butterworth. He started Mark Levinson Audio Systems in 1972 in Woodbridge, CT. https://en.wikipedia.org/wiki/Mark_Levinson_(audio_equipment_designer) My friend Dave worked for Mark Levinson with his next company, Cello.https://en.wikipedia.org/wiki/Mark_Levinson_(audio_equipment_designer)#1980s_to_mid-1990s:_Cello