Balanced connection XLR microphone cables ?

They'll work fine, assuming they are not defective or damaged. However, cables used at live events tend to get stepped on, inadvertently yanked, etc. You'll probably be ok, but if you want to play it completely safe use a multimeter to check for continuity and shorts. Or perhaps the music shop can do that for you.

Regards,
-- Al

Thanks Al for your response. They are new(3 ft.long,$10.00 ea.).I won't have have any wear issues. buying my cables from the musicians supply shop seems like a reasonably priced option for the future when I relocate the amp and need longer cables.

I bought a pair of inexpensive balanced mike cables from Guitar Center to tide me over while I ordered some "proper" audiophile interconnects. To my surprise they sounded terrific and only cost me about $60.