Has anyone tried these stunning new CPT power cord?

Your gear may and should be voltage regulated so you should not hear any difference with a 3-5 vac change.  Voltage from our home outlets often vary that much throughout the day and night. . 

Bill (Grannyring), keep in mind that many and probably most power amps provide unregulated DC voltages to their output stages, and in many cases to their small signal stages as well. Also, in the case of some tube power amps filament voltages are unregulated, and in those cases AC voltage variations can have particularly significant effects.

Also, in the case of components having fully regulated DC supplies a lesser effect that I suppose might sometimes be audibly significant is that an increase in AC voltage will increase the temperature of the parts that do the regulation. Which in turn would slightly increase the overall temperature within the component, perhaps with audible albeit subtle sonic consequences.

And perhaps these kinds of effects are factors in the many reports we see of better sonics at night than during the day, in addition to AC power presumably being "cleaner" at night than during the day.

I would be hesitant, though, to generalize as the other poster did in saying that higher voltage = compressed sound. I would expect the effects of higher voltage to be component dependent, with some components sounding better and some sounding worse, and with the differences also depending on the specific voltages that are involved.

Regarding why the reported output voltages of balanced power units apparently tend to be higher than their input voltages, that would of course be a function of the turns ratio between the secondary and primary windings of their transformers. I wouldn’t want to speculate, though, on why the manufacturers have apparently chosen turns ratios that result in outputs being higher than inputs.

Best regards,
-- Al

Thanks Al. My real point is the outlet’s AC voltage varies that much anyway. At least every home I have
lived in. It varies that much at day and evening. Also, in my past tube builds that have voltage regulated B+ power supplies, they held the VDC ROCK STEADY and that does indeed help the output. The tube filaments are impacted a tiny bit with 3-5 volts swings, but really nothing one would hear the vast majority of the time. At least I have not. I think the AC is simply more “dirty” at peak times and that’s what causes our rigs to sound not quite as good.

@sundial8, input 124.6 output 129.6, hope this helps.
Personally, I have not detected any sound compression.

@LAK, thanks for the info.  In my case, it is the source that is affected with different voltages.  Also with V=IR, higher voltage means less current going to the AMP.  I have taken the 1800 out of the system and I like it better.