I have a Monster Powercenter 5100 unit that has 3 high powered stereo amps and a processor plugged in to it. The UL tags on the power amps rates none of these at more than 1 amp current draw. I have no problems running this all at once and have never pulled more than 4.0A of current load under high volumes. These relates to less than 1/3 rated 15A capacity. I would not want to pull more than 10A total from any electrical circuit because 15A is max rating when the breakers will get warm and start tripping. So, you must add everything hooked up to the circuit, including a light or whatever in another room. Good luck
Tom
Tom