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. 

Nisel Rotax 4

Classic large scanning unit from Nisel. This is the Rotax 4 (4 head) scanning light system. The unit features 4 large PAR 56 lamp heads that rotate back-and-forh at a slow pace causing a search light effect. Each lamp head is fully adjustable and has a neon indicator on the rear so you can see which lamp is faulty when one of them go out. The heads use a 24 volt, 70 watt H-3 lamp (standard automotive), but can be changed for 35, 55 or even 100 watt versions. The heads are custom from Nisel and even have the name in the glass fronts. The lamps lock in through a special clip on the rear of the lamp housing. 220 volt single circuit operation. Nisel also made these in 2, 6 and 10 lamp versions. Unit made in Italy.

METEOR ProBeam Effects Projector

Very unique effects unit from METEOR. This is the ProBeam unit. It is based on a simple standard light projector where you can add different attachments to produce a very psychedelic light show. Currently I have the front prism which makes 4 beams instead of the single beam output. I also have 2 different 3" cassette rotators. The cassettes produce a Kaleidoscope type effect. 1 is sound active via an RCA type input cable from an audio source and the other is a constant rotation. You can connect up to 3 different motorized effects to this projector and run them at the same time through the 12 volt plugs on the sides of the unit. Other attachments include rotating prisms, color changers, 6" effect wheel rotators, different angled lenses and many others. The light source is produced from an 82 volt, 300 watt EXR lamp at the rear of the unit. Fan cooled for continuous operation. Unit made here in the US.