Home wiring

Assuming you are in a home you own.

Basics would be a new line from the main panel direct to your system. 10ga romex with ground is fine for the line. I would just add an addition outlet near your old one as adding a new box is a minimal cost addition compared to running the line. New circuit breaker on the panel, if you have 2 phase power putting the breaker on the other side of noisy things like the fridge and heater can lower noise. Your electrician will know what this means.

For outlets I really like the 'Porter ports' that Albert Porter sells here but there are tons of options and even a hospital grade outlet from Home Depot will be better than the junky outlet that came with the house.

Only other thing is to have the electrician check your grounding system when they are out. Simple to add a true ground rod when they are out and run a line to the main panel. Tons of old homes run a ground wire to water pipes which is just bad news.

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.