What about power cords to mate Krell 650MC amps?

If you can find a pair of the Pure Note Sigma PC's, your search will be over. I use them on my Krell FPB amps and the improvement was not slight.

I have an actively biamped system, and when I tried them, on just one, not only was the quality of that amp improved, but I had to turn up the crossover on the amp with the original cord. When I got the second Pure Note, I was able to put the balance back to normal.

You may have to wait to find them used, as they are no longer available new. Construction, and material costs went up too high to produce them.

You have great amps!

Richard

I tried a Virtual Dynamics Master powercord with each of my components in turn (including my Krell amp).

The best improvement was with my processor, a slight improvement in the sounds of my CD player, and to my ears - abolutely no difference to my Krell.

I am not bad mouthing the kit at all. I think the product is excellent, just that various kit will respond better than others to an improved power cable. Maybe the stock cables I have with the other two units are not as good as those provided by Krell? Perhaps front end of the system is more susceptible to interference?

I have an older Krell. (KSA 250) After trying many cords, (including a Virtual Master ) I am using a Shunyata Anaconnda Alpha.
My Krell is on a dedicated 30 Amp line.

Nice Holiday present!

Don't waste you money on a speciality power cord for the Krell. It will make very little difference. Use the power cord that came with the amplifier.