Well, you've received a no and yes so far.
What does the manual say about that? There are some amps that can use all 3 types, but if it's designed to get all there is out of an '88, probably it'll fry a '34.
What does the manual say about that? There are some amps that can use all 3 types, but if it's designed to get all there is out of an '88, probably it'll fry a '34.