Should I upgrade power cord for my preamp?

I have yet to hear a preamp whose performance was not improved by a good aftermarket power cord. The very best value in my experience is the Shunyata Venom line. You can find them used for as little as $100 and they outperform many far more expensive cords. If you have the scratch, the new Shunyata Alpha analog cord beats anything I have heard under $3000. I use it on my new Convergent Audio Technology Renaissance preamp and also used it on my old Conrad Johnson CT5.

Hi Chris I trade my Cary Audio SLP-05 for the ARC LS27 and so far very happy with my decision. I mate my preamp with ARC DS-450 Power amp, this combo work magic. If you have any questions please send me a note and I will give you more details about ARC products. Tango.

Power cord can make a difference with digital sources and pre-amp as well but for different reasons. Power amp is mostly about current delivery ability. Pre-amp is more about more control of noise. Results can be better clarity, resolution, detail, soundstage and imaging.

I agree with Map, the most important thing with a pre is isolation and draining away noise with cones.Rubber products do not work, Mapleshade cones work well,but
the new Nordost 70$ each metal iso cones are fantastic.

Under a tube pre I consider the Nordosts essential.
Biggest advance I've heard in many years.

How about power cord upgrades for a Herron VTPH-2 phono preamp?