An inverter system is better than any dedicated line, wall sockets, wires, and conditioners......you can add a Puritan filter and dedicated ground rod/filtering. afterwards for otherworldly transparency.....I make no money with this....just so excited for what it does. here is more info:
http://tweakaudio.com/EVS-2/Inverter_Power.html
A 2000 watt Giandel Inverter plus a $400 200 amp hour 12V (2500 amp hours) AGM battery will cost you a little over $750.