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component where PC does not make a difference

Has anyone ever had a component whose sound did not change significantly (or at all) with changes in power cords? I have found that different power cords don't really affect the sound of my amp (ARC VS60), but differences among those same power cords are revealed when hooking them to my DAC (ARC DAC7). Is that representative of tube amps in general or perhaps just this component? Would you expect that the differing "sonic traits" of various power cords would be better revealed on a DAC than a (tube) amp?
nicotico
zmanastronomy's avatar
zmanastronomy
738 posts
 
I have found that power cords make the biggest difference on the source. CD player, DAC...
I get a very small difference on the amp, but on the CD player there is a huge difference.
inna
7,296 posts
 
Preamp and integrated amp will react significantly too.
tobias
1,534 posts
 
Although some components ( power amps ) seem to react less than others ( preamps, DACs ) to power cord upgrades, I have found only one component which showed no obvious change. That one was the Cambridge Audio IsoMagic DAC. The fact that it was equipped with an external power brick may have had something to do with it.
plato
1,543 posts
 
Tube amps also react to power cord changes, some more than others. I recall hearing profound differences when swapping AC cords on a VTL ST-85 amp. But it does seem that DACs and even digital amps are pretty sensitive to changes in power cords.
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