Over the last two months I've auditioned about 9 different power cords. Most were put on the front-end. But I did try a few on my power amp (B&K AV6000II). I was unimpressed with the build quality of the Powerflux. The first one arrived from The Cable Company with bare wire exposed where the shielding separated from the IEC connector. A replacement arrived in the same condition. Their lending cables do see alot of use and that may explain the poor condition. But, in my mind, power cord should be able to stand up to some abuse. Needless to say, I didn't bother hooking it up. From my notes the Synergistic Research Master A/C Coupler was very good. Nice depth and imaging. I felt the dynamics were a little slow. Lots of life to the music. Bass was extended if a little loose. I haven't tried the Essence so I can't comment on it. In my system, the best cord so far is the Custom Power Cord Company Model 11. Bass is tight and extended. Entire range of sound is well integrated. It is well worth the $290 price of admission. My budget was no more than $500 for a single cord. This limited my selection. So, there may be better cords I haven't auditioned.
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