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Bel canto monoblocks and power cables

For those, like me, who believe power cables make a difference: anyone with experience with bel canto amps and power cables. I use Nordost Vishnu with all of my source equipment and hear significant improvement.  With my BC ref 500m monoblocks, which I love and which sound so good, power cable swaps don’t seem to make a difference.   I’ve tried Nordost and Acoustic Zen Tsunamis. They don’t degrade the sound but there doesn’t seem to be much benefit either.  Anyone?
tomaswv
lak's avatar
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lak
4,529 posts
 
I have also found that with a really good audiophile quality amp I don't hear a noticeable difference or perhaps just a tad of difference when trying different high-quality power cords. In this particular case, I'm talking about my Plinius SA Reference amp.  I do hear a significant difference with my preamp, phono preamp, transport, Dac, and FM tuner.
We need someone like @almarg to explain this.
ricred1
1,976 posts
 
I've been experimenting with power cords and interconnect cables lately. Several manufacturers told me the most impact will "usually " be found by upgrading the power cords at the source and using the best interconnect at the source. 
mapman's avatar
mapman
21,830 posts
 
I have ref1000m amps. These draw a lot of current when powered up not so much after. I use basic cords on those. Higher grade shielded cords on source gear. The amps power supply seems designed well to have power in reserve when needed. So I have not felt a need for beefier power cords. The amps are very efficient sound great and never break a sweat. Beefier cords not needed as much in some cases compared to others. Devil is always in the details.
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