K2 Audio, LLC Share: Consultants K2 Audio, LLC Visit Website Request Info 4900 Nautilus Ct. N Suite 200 Boulder, CO 80301 (303) 865-5500 About Map About K2 is a City and County of Denver certified Small, Women-Owned design firm specializing in the disciplines of acoustics, audio/video, structured cabling and electronic security systems. What's Nearby? Distance: 5 10 15 20 25 50 mi.