power cables where do I start?

I purchased a used Kimber PK 10....I was going to put it on my preamp as my dac is not used extensively....

Will go to dac after this experiment. 

really appreciate all the responses...forums like this get the ideas out there.....keeps us all informed

I forgot to mention PS Audio. They also have some older models that aren't cost prohibitive, though they are quite bulky.
B

The first actual difference I could hear from a powercord was a Pangea AC9. (The exclusive seller of (new) Pangea is Audio Advisor)
They have a return policy, so you could try the Pangea and if it does nothing, you can return it. (however multiple returns to AA may get you banned from buying from them)
Anyway, my first commercially made aftermarket powercord for Pangea was CHEAPER than one equal to it I could have made myself.
That Pangea I could hear an improvement immediately. and I was suprised.
Anyway, I bought a pile of them several years back and stopped. I am satisfied... and no longer have any wanderlust for other powercords. I can switch between models of Pangea and hear differences. But i just have no interest in chasing some 'mythical' better powercords.No matter how many folks howl about some.

So I would recommend trying either Shunyata, which have been praised by a lot of folks for making a good entry cord. or Pangea.

The one other recommendation I would offer is to think about power conditioning. Which is an equally important power upgrade.
But is also a can of worms. I started with a cheap Adcom, them a mid priced Monster.Top Monster,  Finally now I own a top of the line Furman REF20i AND a PS Audio P600.
Good luck.

I won't claim that power cables cannot or do not make a difference, but i will say, based on a LOT of comparative listening with some very high end gear, that its a modest difference and not always an improvement over industrial stuff.  If they do, they must be filtering out power line hash, and that points to better solutions and bigger problems.

I didn't comment to start an argument--- rather, i am responding to your adjective "modest". If indeed your system is modest, and you are not a magician, then I am certain that you can spend your money more productively elsewhere.  Typically DACs and speakers have the biggest faults these days (or, the inverse, make the biggest improvement). Its the weak link in action - find the weakness and upgrade it. (note: my first professional designs were amps and preamps.... so I'm throwing stones at myself....)

One thing I've learned over the years is just how superb a system can be even with home depot wires. Since I design gear, i am constantly swapping in and out pieces that might explode or so something bad at any moment.  So i often have rigged wires and boxes in my system to add protection fuses (horrors!) using whatever i can find (lamp cord, 30 year old banana plugs..). And lo and behold, when i get everything else right, it disappears.

Just sayin

G

Try out my advice folks, it`s free