I had bought this one per the recommendation of another member here. It can power a QSC CP8 for a reasonable amount of time.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
I bought this one a while later to power a CPAP device if I lose power. It as well does OK with the CP8. I think one that can output 300w might be a good choice as it can run longer if needed. Unfortunately no longer available.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
Both of these have come in handy for power outages and having lights (LED fixtures) on at night. Much better than starting up the generator for short term use.