Dedicated Outlets - The Latest Recommendations

This topic has received a lot of attention over the years, but I'm having trouble pulling all the pieces together so that I can communicate to the electrician exactly what it is I'd like to have done.

I'm hoping to add two separate, 20 amp lines for my audio equipment, and since we are having our roof redone, this presents an ideal window for a project like this.

The service panel is on the lower level of the house near an outside wall, and the lines would come up the wall, travel across the space above the ceiling and under the roof (roughly 12 inches), and then down an inner wall to a room on the upper level.

I'd like to know what type of wire is best to use (the total distance from panel to outlets is about 75 feet), how it should be attached to the service panel, and what type of outlets are recommended.

I recall seeing advice in the forums to use twisted wire to reduce hum and EMI, and not to have the two runs too close to each other.

Any advice for specifying specific materials, and communicating with a non-audiophile electrician would be greatly appreciated!

And I'm hoping Jea48 and other knowledgeable members will chime in with either sage advice, or links to relevant sections of past discussions.  Perhaps we can make this thread a starting point for others contemplating similar projects.