Vintage Triadex Muse-1 sequencer, serial 00182-105. Very good condition, tested and fully functional. All controls on the front work as expected. This comes to us from an estate collection of a studio engineer who kept their gear in great condition.
Info from an article on vintagesynth.com:
The Triadex Muse is a sequencer-based synthesizer from the early 1970's. It was designed by Marvin Minsky and Edward Fredkin, both MIT professors with an interest in artificial intelligence. Intended as a compositional aid, the Muse is unlike most synthesizers out there. In lieu of a keyboard, the Muse uses eight 40-position slider switches which control a series of digital logic circuits using complicated algorithms (the Muse is considered one of the first digital sequencers). The binary output from the logic circuits is fed into a digital-to-analog converter (DAC), and the output from the DAC is fed into a simple VCO. The result is a sequence of notes which, depending on the slider settings, can take years to loop back around to the beginning!
Operation of the Muse is not particularly intuitive, yet it is not too difficult to get started. Four of the sliders control the interval of notes, and the other four control the overall theme. A bar-graph lamp display near the sliders shows the status of the logic gates. Another set of sliders control the volume from the internal speaker, the tempo of the sequence, and the pitch. Additional switches allow you to start the sequence from the beginning, step through it note-by-note, or substitute a rest point in place of the lowest note.
The Muse retailed for only a brief period of time in the early 1970's, and is considered extremely rare. The exact number of units sold is unknown, but is thought to be under 300.