Unknown Manufacturer 4 Beam "Flat" Unit

This is a unique lighting effect unit made by???  I'm thinking it might be a classic MBT or LyteQuest unit, but not sure.  The only markings show MK-A3373.  I have looked around and found nothing.  Unit features a standard 120 volt, 500 watt linear lamp that rotates to the beat of the music.  The light projects from the unit through 4 different colored rectangle lenses located in the front.  Very cool unit made in Taiwan.