Power Cable options for Levinson 300 series


I currently have the Levinson 33H's, and before them the 336. Both these amps have a Levinson power cable built right into the Chassis. Knowing how much a good power cable can improve a component, I am wondering what I could be missing in improved performance if I was able to put an after market cable on my 33H's. Does anyone know of any way to make this happen for the 300 series, as I believe they all, from the 331 to the 336, and including the 33H and 33's..........have built in power cables!
bullot
Thanks very much for all the input folks.......some excellent food for thought! I am going to have a closer look at my power situation for starters. I have been planning on doing this but a change of address was in my near future, so was holding off till I got in the new digs! I will definately be using some of this advice.
I'd bet ML knows a heck of alot more than us and decided the correct gauge will make a difference not some esoteric
material. The power just came down how many miles of god knows what, not to mention step down transformers and such.
Save your money and worries and spend more on the music.
Some of the numbers listed by other members are not entirely correct. 350/700/1400W rated Levinson 336 will pull in 3/6/12 amps MAXIMUM. Short dynamic passage will be handled by reserve currents in the capacitors. In normal listening level the amp will pull in 1 amp or less.

The dedicated AC circuit is still a good investment considering how affordable it is. I've installed 15A dedicated line a couple of years ago and I'm very happy with it.
Jylee, you are absolutely, positively incorrect. My power figures, every single one of them, came from the Mark Levinson owners manual for the 336. If you don't believe me, you can go to their web site and download the PDF for yourself.

In fact, even your 1 amp estimate for the 336 in normal listening is not correct. Levinson says at 120v the 336 will dissipate 3.35amps IDLING.
I must admit Levinson 336 consumes a lot of power as a class A/B design, and my numbers are somewhat underestimating. But their test figure is just that, driving test equipment given test signal. Unless the music is played in a large hall at extreme volume level using highly demanding speakers, I can't see how it could saturate standard 15A circuit.