2 different amp terminal question

Id rather not even ask this question.

but I just hooked up my amp recently and it has the flat-screw wire type terminal

and I just borrowed another amp and I wanted to test it out
but it has the round hole -hex type screw terminal

If I stuck the spade into the round hole terminal (it bascially fits in there)

I'm asking because....I don't have anymore spades, and I don't think ill be able to re-crimp it onto the wire after I take it off

Will it be making enough contact to be sustained???
Will it short my amp out or something? or mess the amp up....?

NVM

I TRIED IT AND IT WORKED
wow...now I need to buy that amp....

you will not get the same contact area as if you had the bare stripped wire ..... but it won't hurt anything just won't get full power.