Hi Karen,
in an open all-day school and youth care we are using a JVC
BoomBlaster with an USB audio player or the build in CD player.
Personally, I would stay away from this kind of portable consumer gear.
What they call DJs nowadays, are using laptops and the sound systems of
the locations were they do their job.
You didn't mention for what grade of professionalism it should be used
or what kind of amplifiers you are already using for your music
instruments or vocals.
Regards,
Ralf
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pacman -Q linux{,-rt{-pussytoes,-cornflower,,-securityink}}|cut -d\ -f2
4.18.1.arch1-1
4.18_rc8_rt1-1
4.16.18_rt12-1
4.16.18_rt11-1
4.16.18_rt10-1