Hey Matt,
I'll give you a couple of Basics here. Example: A Living Room. Most of the time all the Outlets in the Room are connected to a Single 10 amp Circuit Breaker. Chances are, you're pulling Most of the Power from the Outlet where all your Electronics plugged into. I hope you are using a Surge Protector Power Strip and NOT a Cheap Multi-Plug Outlet extention ! If you use a Power Strip you should be OK. If your House is New, All the Breakers in the Breaker Box should be Labeled. (Example: Living Room). What you described should Not be pulling anywhere close to 10 Amps.
Hankhank