One dedicated 20 amp line is more than enough. In my setup installing an audiophile quality circuit breaker had a bigger impact on SQ than the dedicated line itself.
Regular circuit breakers do bad things to the sound, so check out the audiophile one from Gigawatt. For 75 Euro, it's one of the better audio bargains I have purchased.
Regular circuit breakers do bad things to the sound, so check out the audiophile one from Gigawatt. For 75 Euro, it's one of the better audio bargains I have purchased.