Dedicated line is great. You could isolate the dedicated line completely by having your electrician install a isolation transformer. Square D makes them as well as many other manufacturers. You could even go so far as to place the transformer between your panel and subpanel (if you went wild and installed that too).
But a #12awg (2) wire plus ground, metal clad cable, or EMT raceway with wire to feed a high quality plug will work wonders for the sound quality. I think isolation transformers are the best if you live in a building with many other residents feeding off the same main service you are.
But a #12awg (2) wire plus ground, metal clad cable, or EMT raceway with wire to feed a high quality plug will work wonders for the sound quality. I think isolation transformers are the best if you live in a building with many other residents feeding off the same main service you are.