Oh, and it weighs 90 pounds and I use it as my desk. Has a couple of sliders that don't work and the backup battery is dead, but it still works and still has polyphonic aftertouch which is vanishingly rare and very powerful. No built-in sounds and has to be plugged into a computer or MIDI sound device to actually produce a waveform.I have Kurzweil Midiboard from the 80s. Solid state, of course, but no ICs either. Just big resistors and transistors etc that I can pick up with my fingers. So if I ever want it rejuvenated I can (in theory) do it myself.
If it was tube, of course, it would weigh more like 200 pounds and could be used as a bed.