In my research I found if you want to run electronic gear your best bet is with an automatic regulated output. I didn't find this necessary while used in conjunction with a UPS (for computer) but the effects are obvious when using a small unregulated generator on a TV, which I'm sure would mimic the quality you should expect on your stereo.
Also, given the massive power outages in FL, unless you express freight one in, you'll prob. have to drive a state or three away to find one. In looking around generator web sites last week, I noticed many were not available & some of the sites had posted they were redirecting their supplies for FL. I ordered an 8k watt unit from Sam's Club last week & today they don't even have them on the website.