Speaking from experience with a friend who went through numerous steps upgrading his dedicated AC line, solid core is better than stranded. Improvement achieved going to !0ga replacing 12ga, and additional improvement going to 10ga Cryo'd Romex from VH Audio (no affiliation) replacing the standard 10ga Romex. Also, better to have at least 2 lines, one for analog, and one for digital. He was not using a very high power amp, but a high quality 60 watt pure class A.
comparison of different dedicated AC line types?
Im getting ready to move my audio system to another part of the house. I'm wondering if anyone has had any experience in comparing a regular dedicated 12 Ga romex line feed to a greenfield (flexible metal conduit) dedicated 12 Ga feed line? Also has anyone tried to terminate a dedicated line with an IEC and plug it in direct to your equipment?