Quote:
Originally Posted by bohemian
I wonder how much the gauge of the wire makes with an additional ground wire over the grounding in the power cables and equipment.
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It makes a really big difference. One that is very easily audible. One can very easily hear the improvement in audio quality as you move up from Venom to Delta to Alpha, for example. And, you'll also hear more improvements as you add more ground cables to your components. A surprising improvement I observed was connecting a Shunyata ground cable from the ground terminal on my EtherREGEN to the GP-NR terminal on my Everest. The improvement was not subtle. Same thing when connecting a ground cable from an Aurender or Lumin streamer's chassis ground post(s) to Everest GP-NR.
And, thank you, Uptone, Aurender, and Lumin for installing a proper ground terminal on your wonderful components!  Why doesn't everyone do this anymore? 
The best analogy to get a handle on the differences is to think of the improvements you get when go up a level on the power cord.
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Lumin P1 streamer/DAC/preamp, Constellation Inspiration integrated TT: Michell Gyro SE MkII, SME V, Koetsu Urushi Vermilion, EAR324. Harbeth 30.2s, REL R-305, Shunyata Alpha V2 ICs, Alpha V2 SPs, Sigma XC, Sigma NRv2, Omega QR-s & Alpha NRv2 PCs, segmented Altaira SG stack w/ Alpha & Omega CGCs, Everest 8000 PD. Remote Server Room: Uptone EtherREGEN, AfterDark Master Clock & LPS, Alita, Battle Angel, (Akasa NUC Roon Core), iFi DC Purifiers (for SMPS used for Alita & router), Shunyata Gemini combo power distributor & Altaira-type CG GP-NR hub, Venom & Alpha CGCs, Shunyata NRv14 power cords for digital components.
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