MK Signature Cube Horns custom Designed by the Audio genius Mike Klementovich. Auditions possible by contacting designer. East Coast........ 75 minutes west of NYC. Come and listen to the finest, smoothest, most dynamic system, on earth bar none at any price. Powered by the most perfect mono block amplifiers in the world today the Quicksilver Triode 6C33C's. Acoustically designed and treated audio room. No information will be given about the behind the grill components or crossover design used in these stunning CUBE HORNS.