Enough noise reduction?

holmz,

what makes them better is the rectangular shape of The wire greatly reduces the skin effect, I was using round OCC previously and after trying the rectangular stuff I can tell you it's much better not cheap though but well worth it, another tweak you should look at is the Townshend podiums, best speaker vibration isolation product on the market isolates down to three Hertz much more effective than the isoacoustic Gaia. most significant upgrade I've ever done it was like I upgraded my electronics it was that good.

what makes them better is the rectangular shape of The wire greatly reduces the skin effect,

@urbie 

But I thought that skin effect was mostly something affected high frequencies and the power cord is 50 or 60 Hz?
As we approach DC the entire conductor is in action… all the way down to its very core.

another tweak you should look at is the Townshend podiums

^This^ is happening after the electrical signal is launched into a air as an acoustical field… so is a bit outside of the electrical system noise.

holmz,

all I can tell you is when I switched from the round OCC power cords to the rectangular OCC wire power cords everything got much better.

@bgpoppab check out NRG Custom Cables in Canada. Hand made to order, but won't break the bank. I have the. 1CS feeding my distribution block. It gave a nice little boost to clarity/noise floor (reduction) in my set up. 

@holmz @erik_squires 

I just received a reply from Diego Estan who was recently hired to measure the equipment under review for the SoundStage Network of web sites. I asked whether or not he used special power supplies for the equipment under test. Here is his reply (edited for typos):

To answer your question, absolutely not. All devices under test, [other] than amplifiers and integrated amplifiers, are directly plugged into the same, standard 120V/15A circuit, as the Audio Precision analyzer. This is a typical circuit in a spare bedroom of my home and is shared with lighting, my home PC, etc. 

 

For amplifiers and integrated amplifiers, these are plugged into a dedicated 120V/20A circuit, and the minimum observed AC line voltages are provided in the report. Nothing else is plugged into this circuit other than the amplifier. There's only one 20A electrical outlet on this circuit, and it's a relatively short run to the electrical panel.  

 

I live in Canada, and electrical code dictates 14ga solid copper for 15A circuits, and 12ga solid copper for 20A circuits. 

 

I will also say that my home is relatively new (2012), and I have pretty stable power.