I have a 20a rated power strip, all 5 are plugged into that, and that goes to a single wall outlet. My landlord is willing to help install a dedicated line, but thus far... I haven’t needed it. Most of my usage is 2-channel audio, but even when I go 5- or 7- channel, I have only turned it up above -5dB on very few occasions, and usually -10 is as loud as I go.
To date, the most taxing thing I’ve done to my system is the Netflix Godzilla trilogy. But that was more on my subs than the speakers. But even those X-13s and the 2200s still played nicely.