Power Cord for CAT

I have found the CAT Ultimate to be pretty much immune to the several power cords I have tried on it. I have tried the ESP Essence based on the recommendations of others and this thread. I was disappointed with the results as I didn't notice a great deal of difference. Then, I tried the Essence on my Pass Aleph 4 power amp. The bass was heavier, but not deeper. Overall, it was not an improvement. I went back to the stock power cord on the CAT and continue to use the Audioquest AC-12 on the Pass Amp, vowing to not waste any more money on aftermarket power cords.

JPS Power cord made a slight positive diference on the ultimate other cords didn't make a difference

The stock powercord works best, period. i really doubt if Ken Stevens has recommended the ESP cord, because what i gathered from many fellow CAT owners, is that Ken recommends using the stock cord. I also hear that the PSaudio 300 works great with the CAT, i tried some other AC filters with no good results, and some of these filters cost enough... happy CAT mk3 owner.

I have CAT amps. FIM is thrilling.

The ESP essence greatly improves my CAT Ultimate in More solid bass, more inner details. Recently, I upgraded to the Shunyata King Cobra. It takes the improvement made by the ESP up even further. Give it a try.