What Power Cord can improve clarity and bass slam?

Elrod Signature. The 2 for your source and the 3 for your amp. You can get them used for around $500. They were $1650 new.

Opus88, funny you should mention the Verastarr Grand Illusion copper cord. I have one for sale on another site. I would have mentioned it with the PAD and Elrod, but I didn't think many had heard of it.

Sorry Dayglow, it doesn't matter how much money you spend, whether it's on cables, cords, speakers, amps, whatever, you cannot have it all. When you improve bass definition, it comes at the expense of bass weight, and vice versa. What sounds like bass weight comes from an under-damped woofer, or one that is allowed to ring or vibrate a bit more. Those who love fast, articulate bass, or tight bass, call this bass weight, slow or boomy. If you go in the other direction and want fast, articulate bass, bass with high definition, those that like having bass weight would complain that the sound is too lean sounding. You just can't go north and south at the same time, no matter how much money you spend. Sorry.
Now it sounds to me that you wish the bass to be more prominent, which sounds like you want more bass weight to me. So I would recommend the aforementioned PAD Dominus, Elrod Signature or Statement, DCCA Passion Master or Verastarr.
I'm actually selling a Verastarr and a DCCA cord now because I went with cords that offered more speed and resolution. A Nordost Brahma and a Ridge Street Poiema!!! Signature. Happy hunting.

I wouldn't overlook the Kubala Sosna Emotion power cables. I believe they would work nicely. Good Luck.

Yes, the K-S Emotion will also provide more bass weight, as will Virtual Dynamics power cords, if you can find them used, as Virtual Dynamics is out of business. One word of warning on the Virtual Dynamics cords, they present a very large soundstage (height and width), but rather flat and two dimensional. Some folks love that front row excitement, others, like me, prefer a smaller, but more 3-D stage. The K-S and PAD do this very well.

When I tried different power cords in my system most robbed me of "bass slam" - quieting the noise floor but also diminishing dynamics. Only ones that let true punch come thru in my system were Audience. Energy is drippig off every note.