OP that's a stock PC? I think all my preamps from Mac were 3 or 4 feet.
Power amps the same.. Heavy Copper.. Nothing fancy they work just fine at least mine do. I have tried a few fancy PC on my Macs over the last 30 years, LOL. Kind of a waste of good money.. Cary tube power amps, a whole different story.. You better take a little time and pick a good PC.
Regards