I do not have a dedicated power line for my audio system but I did install two AC mains duplex: 20A, Cryogenically treated, Rhodium plated contacts wall plugs. And, yes, much to my surprise, they made a noticable difference. The system is more quiet, has less background noise and I noticed it immediately. These Rhodium plated contacts wall plugs are recommended ($47 each). I purchased them from James Romeyn (see link below).
I also purchased his “Pure Grid POWer” RC-8 Outlet Strip/AC Mains Extender ($429). This unit has 4 Cryogenically treated, Rhodium plated contacts wall plugs (same as above) and I use it for my two Hypex NCore NC400 bridged mono block power amplifiers (4 NC400's, 2 each channel) and my DAC. My Aurender Music Server is plugged direct into the Rhodium plated contacts wall plug. This is electrical power with no surge protection or power conditioning. It is just like plugging my amplifier, DAC and music server direct into the wall plug. His Pure Grid POWer” AC outlet extender is also recommended. See link below.
http://jamesromeyn.com
James is very helpful and answered my many questions. I suggest you discuss your dedicated line and wall plug questions with him.
I also purchased his “Pure Grid POWer” RC-8 Outlet Strip/AC Mains Extender ($429). This unit has 4 Cryogenically treated, Rhodium plated contacts wall plugs (same as above) and I use it for my two Hypex NCore NC400 bridged mono block power amplifiers (4 NC400's, 2 each channel) and my DAC. My Aurender Music Server is plugged direct into the Rhodium plated contacts wall plug. This is electrical power with no surge protection or power conditioning. It is just like plugging my amplifier, DAC and music server direct into the wall plug. His Pure Grid POWer” AC outlet extender is also recommended. See link below.
http://jamesromeyn.com
James is very helpful and answered my many questions. I suggest you discuss your dedicated line and wall plug questions with him.