dedicated power line

I am in the process of having and electrician upgrade our home service to 200 amps. While he is at this it is quite easy for him to run a dedicated line for my hifi closet. What are the cost effective measures that i can have him put in place that have proven to upgrade sonic (and for that matter video) performance.

Hi Neil, I think the basic cost effective way is to run two dedicated 20 amp lines, one for analog and one for digital, with good quality wire, 20 amp breakers, and 20 amp outlets, but not hospital grade.
Make sure he wires them on the same phase leg. Otherwise, you might get a ground loop.