John Massaria
Member of the Trade: JM Audio Editions/Headphone Modifications
The best thing I can personally suggest is to invest in a dedicated 15A-20A single pole circuit breaker for your digital equipment and AND MAYBE another 15-20A for your amplifier/preamp/headamp. Using 12 gauge or better yet 10 gauge romex type wire. Another suggestion while your electrician is there- ask him to tighten all grounds connected to your box. To quote an article I read from PS Audio (not a fan or not of PS Audio mind you)- "A dedicated AC line is simply a separate AC wire going back to your home’s circuit breaker box. Instead of the standard AC feed with multiple AC outlets available for many pieces of equipment, a dedicated line is a “home run” single-use wire from the equipment it powers all the way back to the circuit breaker box where the AC power comes into our homes.... For less than the cost of a budget power amplifier-a mere $373.45—the electrician ran two new 20A lines to the listening room, one with the hot on one side of neutral, the other on the other. Each had its own circuit breaker and each fed two hospital-grade wall sockets. (These orange receptacles grasp the prongs of AC plugs with a clasp akin to the Vulcan death grip.)" Hope this helps- when you sell your home its a feature some buyers may love- but in the time in between you will have musical bliss blowing away any cable purchase or maximizing equipment purchases you can make. You could also do a isolated ground- and a metal box thats also grounded. Please discuss if you find this helpful.