Don't feel bad.....I just spent a couple of hours messing around with the remotes for my MX-80.
Had one out for repair and finally got it back...so I was just replacing some fresh coded EPROMs I got back with the remote, and then just futzing around comparing the functionality of the two remotes (two different models).
I sang "Rocky Mountain High" with my wife, her singing, me on electric guitar... she went to bed and now I am drinking a coffee and Baileys looking at this Jambox thing...
No drinkin yet...researching opamp upgrades to the 234, prepping another M-__ I/O module for deep cleaning a recapping, and finishing up repairs to another...soldering iron is hot.