I don't personally own one, but I've seen a couple Stick players perform through some of Powerwerks PA columns. They sound really nice and are pretty low cost. Just happen to look at what is on their website and the frequency response on most are 20hz-20kHz. Some models have effects and stereo inputs in them too.

Those of us who go to the local Stick gatherings in Ann Arbor have heard Steve Adelson through one of these things. Was a Skype session, I was amazed how well Steve sounded through that over Skype, via Bluetooth, no cables attached.

The 150 PW caught my attention, bigger than what I had seen, and more power.