Florida 2019: The Shunyata Research Noise Reduction Experiment











One of the best things I took away from the Florida show was a little science experiment that came out of a meet-up with Grant Samuelson from Shunyata Research.  Several times in audio forums in the past, I have referred folks who want real scientific data on high-end cable performance to go visit the video and technology pages of the Shunyata Research website.  In one of the videos, Caelin Gabriel, the scientist who runs Shunyata, uses an Entech powerline “noise sniffer” to show the dramatic decrease in noise that plugging in a Denali makes on the Entech.  The reader should be aware that Entech is now out of business and authentic units are hard to come by even with some Entech ads being outright fraudulent so, please, buyer beware!  That said, Shunyata feels it’s fairly accurate at detecting broadband common mode noise.

The Entech is a neat device because it has a built-in amp and speaker so you can hear the noise being generated on the powerline.  It also has a digital readout that allows the user to set the relative noise level.  There is a gain control on the face of it so when you increase the gain, you reach a point where you hear noise and you can set that noise to a nice round number like “100” or so and use it as a baseline for the experiments.

The interesting thing was that Grant had brought in one of Shunyata’s power cords that are used for medical applications, a new and growing part of their noise reduction business.  Grant and I would test that medical AC cord right in the kitchen of the hotel suite of Suncoast Audio which also happened to be running a Denali tower.  You can read about my review of the Denali tower HERE.

So how did the Shunyata power cord perform in the test?

We started with a noise gain setting at “104.2” as you will see in the first photo.  The is the baseline for noise in the hotel suite.  The noise was quite noticeable.

Next, we plugged in the power cord and in a different outlet, the Entech “in parallel”.  Just having the Shunyata cord plugged in led to an 80-90% reduction in noise.  Things were much quieter now.  In the second photo, you see the Entech reading “14.7”.  Aha, now we are getting somewhere.

Finally, we connected the Entech in series with the Shunyata AC cord, and now, noise is almost eliminated as the Entech device reads a very low, “00.9”.  Noise was almost totally silent.

This experiment matches my experience with the Shunyata Delta power cords and the Denali tower.  Every time it was plugged in, the noise floor was super low, and the sound quality noticeably improved.  A Shunyata power cord just simply works.

Many thanks, Grant, for demonstrating the noise test “live” for me in Florida.  A convincing experiment!

P.S.  If you want to watch the video on the Denali noise reduction test, click below.