The AC cords supplied by ARC are quite substantial, including a 20-amp IEC main input on mono blocks. These can be improved upon in terms of better metals and other materials.
In recent years, and perhaps still, ARC factory-test-listened with AC cables made by Chris Sain, here in the Twin Cities. I have been acquainted with Chris over the years and have auditioned his Sainline AC cables, which were over my budget at the time, but I was inspired by that sound improvement to make some cables for my system--first try was ok--second try was very good and still in use.
ARC does adhere to their own advice, and your system is going to sound as it should by using finer-quality copper/silver wire, connections, etc. This has been well-established through real-world listening over many years, my fellow audiophiles.
In recent years, and perhaps still, ARC factory-test-listened with AC cables made by Chris Sain, here in the Twin Cities. I have been acquainted with Chris over the years and have auditioned his Sainline AC cables, which were over my budget at the time, but I was inspired by that sound improvement to make some cables for my system--first try was ok--second try was very good and still in use.
ARC does adhere to their own advice, and your system is going to sound as it should by using finer-quality copper/silver wire, connections, etc. This has been well-established through real-world listening over many years, my fellow audiophiles.