in any booth, the sound shouldn't be so loud that it shakes your jog wheels... you'll be ok with the mixtrack pro.
i just inherited one from a relative who wanted to get into DJ'ing but couldn't. i used it saturday at a benefit gig and it was fine, sound-wise. there's actually a decent card in there.
if you want to broaden your horizons for more gig opportunities, get a CDJ and run it in HID mode just to get a feel for it.
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