Triadex Muse Sequencer with Lightbox 1972

Very rare Triadex Muse Sequencer unit, built in Newton, Mass. Even more rare is the Lightbox add-on unit. Considering their age, both units are in very good condition. There are 4 issues to mention: The ‘Tempo’ fader knob is missing. Aside from affixing another similar knob to the fader hook, one can adjust the control with a thin rod, if need be. The internal speaker is not functioning. I always ran RCA’s out to a 1/4” to seperate amplification, as the internal speaker volume was rather low output. I will supply that cable in the purchase. There are also four dots drawn on the lower corner of the Lightbox. The B8 bulb on the actual sequencer has always been dim.
This is the first sequencer of it’s kind ever built. Google provides a further history of this extremely interesting, creative electronic instrument.
I am more than willing to send a demo video, with the unit plugged into a powered speaker.