Why do you need a separate outlet?
Can not use a power strip?
Certainly you can use a power strip, but the point is that two monoblocks have two different power cords, so require two outlet receptacles, whereas a stereo amp only needs one. A seemingly minor reason not to pursue monoblocks.
My experience going from a single stereo amp too monoblocks derived from the exact same circuit resulted in better separation, improved soundstage, and even somewhat better dynamics and improved clarity. .

