05-26-13: Waxwaves
The Kaplan power cable that I am considering is the H.E. II model. John, are you familiar with this one?
Sorry, no, I have not heard any Kaplan power cords or cables. I'm currently running a Acoustic Zen Gargantua II on my CODA amp with good success. Other amp cords that have worked well with amplifiers previously are Elrod EPS-3 Signature and Statement (I currently have a Statement for sale), Fusion Enchanters and Purist Audio Dominus w/ Ferox.
All of those cords are powerful and dynamic with very good to great 3-D soundstaging abilities. The Fusion Enchanter has a tad more high end extension, but at the expensive of some bass weight. The Purist and Elrod cords can drive some serious bass.
As with all cables and cords, some sacrifices must be made at some point. No one product does everything well. You'll have to decide if you want more bass weight or more high end extension.