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You often have to "work the problem in reverse". Typically, Op Amp current drive capability is specified indirectly, e.g., guaranteed output with a 2K load = +/- 10V. From this you can conclude that the Op-Amp is capable of supplying 5 mA of current. With a 600 Ohm load, this fictitious Op Amp could provide 3V Peak = 2.121Vrms.
I'm confused about the phrase "or any mic". Why do you want to drive a microphone?