Should I upgrade power cord for my preamp?

Upgrading the PC to your preamp can make a huge improvement in performance. However, each aftermarket PC is different and it may take several attempts to achieve the timbre that pleases you.

I believe cables should be thought of as a component in the system. My advice is to try a couple from a company like Audio Advisor, who has a 30 day return policy.

It's important for you to use a cable that is rated for low-current components. IOW, you don't need to buy the same cable that your amp is using. IME the heavy gauge cables will have a negative effect on a preamp.

Audiolabyrinth
@ Lowrider57, Hi, May I ask you why you believe that a heavy gauge power cable can have a negative effect on a pre-amp or digital componet with volume control?

I'm only speaking from my experience having tried a large gauge Tributaries and Pangea on my preamp; the effect was less detail. I would think that if there's a large power supply in a preamp, then maybe the higher current demand benefits from a larger cable.
Then there's the marketing of high current draw vs. low current cables that I was believing in; although I think there are cases to support this.