Home wiring

Hire a licensed electrician.

The same line as the fridge, AC and heater? Wow, you should make that change. Way too much crap on one circuit.

Thanks everbody !

don't worry I will hire an electrician. It's a house I just purchased so the wiring needs work

One other thing to consider with the electrician is that most of the cost is just getting them in the attic or basement to run the line. If you have a little extra money for the romex have them run 2 separate lines with their own grounds to two new outlets. Allows you to later separate amps from frontend or analog from digital. Just make sure that both lines are on the same phase of your panel and that if possible they are on the opposite phase of things with motors / compressors / dimmers.

Dedicated lines really are a big improvement for the money.

I am not sure I understand your post.You run your system ,A/C, a fridge and a heater off one and the same line?What is it a 15 or 20A? Even a 20A will trip with the total load.A/C requires dedicated line so do fridges and big heaters.So you must separate your system and run it off another line.Electrical wiring is not really that hard and running cable lines BUT because electricity is lethal most people rather have a licensed electrician do it.I wired my entire house and done work in other homes as well and in fact my work was neater than some pro electricians I seen.If your are not comfortable working with home wiring please do hire an electrician.
Regards
George