This was my Christmas gift in 1980, shortly after I became interested in guitars and wrapped it up in a blanket along with the manual and pedal, stored it in the back of the cupboard above the stairs at my dads in 1981 and forgot about until recently clearing it out. With it being in a time capsule, it's pretty much brand new, and probably the best one on the planet going off my searches. Everything works perfectly and upon opening it's got a lovely 1980s smell

Would it be wise to add MIDI IN to it - or would it ruin any value?
Any info/help would be greatly appreciated.
