Beat-Box Amp Solutions?
 

So, I'm a drummer for the most part, but I dabble in a lot of different things. I've recently ordered the Boss RC-505 loopstation in hopes that by summer 2017 I will be practiced enough with it to do some street performance. All the sound will originate at my mouth for the most part, so I'm not too concerned with guitars or drums. But I will be beat-boxing, singing, and creating semi-synthetic pad and bass sounds.

My question is about amps. I need a relatively small one for easy transport, but I'm also gonna need a fair amount of low- and high-end frequencies. Should I be looking at keyboard amps, or what? I need a good mix, and I have a pretty good understanding of using EQs for creating the right space for sounds, but I just don't know what kind of amp would sound good with all those things coming through it at a decent enough volume to keep ahead of some medium traffic. I don't know much about amps (hence mentioning that I'm a drummer), so any tips or articles or whatever would be much appreciated.

Thanks.