Bose Corporation; Harman International Industries; Bowers &Wilkins; Klipsch Audio Technologies; KEF; Sonance; Yamaha Corporation; Sony Corporation; Creative Technology Ltd.; Wharfedale; Cerwin Vega; Behringer; Peavey Electronics; Jamo; Dynaudio; Sound United LLC; LG Electronics Inc.; Logitech International S.A; Panasonic Corporation; Audiovox Corporation; Boston Acoustics Inc.; Bang & Olufsen; JBL Professional; Harman Kardon; Definitive Technology; Sennheiser