Hey nmercereau,
I have an original EX-80000 guitar synth that I’m currently selling if you’re still interested. Here’s the Reverb listing if you want to take a look…
https://reverb.com/item/71887829-electro-harmonix-eh-8000-early-80s
I just plugged it in this morning (after about 43 years!) and it still sounds as glitchy as it originally did, but still seems to be making a brave attempt to track. You probably need to super-compress the input signal to get any solid tracking with this thing, but then again the value of this unit is in the fact that it’s so rare. When I acquired it in about 1981 I was told that it was a prototype unit.
Cheers,
Hughes