I own two Beyond Power (one on the integrated amp, one on the SACDp) and a Clear Power (on the SACDp AC filter), with Beyond XLR Interconnects (!!!) and the old double run of Golden Reference Speaker in "shotgun" configuration.
I tried a single pair Clear Rev.1 Speaker first down than up and I realized I have to buy two pairs, Clear Rev.1 is clearly better in every parameter but now this new Beyond XL Power may change my plans...
What should I buy first now (since I have to choose) ?
The "basic" Beyond Power sounds extended, neutral, controlled, with great ability to resolve the single instruments and their melodic lines.
I think bass fullness and "slam" was its main lack, compared to power cords like, for example, Shunyata Anaconda Helix Alpha I could try in my system.
The "basic" Beyond provides more harmonics, reverbs and ambient informations, with better image widht and height but it is a bit less dynamic than my previous Lessloss DFPC Signature; furthermore, it may sound a bit bright on some gear ... not mine, but many told me, anyway it doesn’t have quite the smoothness and warmht of some Purist Audio Design or Kubala Sosna power cords I had before.
I expect the Beyond XL to be weightier in the bass, more dynamic than the "gentle" character of the "basic" Beyond, with a slightly warmer presentation.
Clear M is now a "Legacy" product on the Cardas website, so I expect the old Beyond to become the recommended cable for sources, being the XL the one for integrated and main power amps.
I wait for impressions of early users!