Do equipment stands have an impact on electronics?

Nope. There is no evidence for any of this stuff and thus the point of the thread. There are apparently "engineers" involved with some of these products but no data whatsoever, just pseudoscientific intuitive and fights of fancy (and youtube videos)

You are obviously not trying very hard to unearth this evidence? Here are several examples using your preferred method (accelerometers) supporting two of the items I use in my system

1) Shunyata Dark Field Elevators for cable isolation
http://www.shunyata.com/images/technical_features/dfss-chart.jpg

2) Grand Prix Audio racking systems -- which include a variety of isolation methods including ball/cup feet exactly to deal with floor borne vibration (Apex footers)
http://www.grandprixaudio.com/research
http://www.grandprixaudio.com/products/apex#product-features

And for a more insidious problem here is a technical discussion of vibration induced jitter in CD playback
http://www.industrial-electronics.com/DAQ/optical_discs_digital_data_and_vibrational_jitter_effects.html

None of this is mumbo jumbo, it’s all established science -- two minutes of online research turns all of this up -- personally I thought this thread had morphed into more of a discussion of how to address these issues rather then whether they were worth addressing

1) Shunyata Dark Field Elevators for cable isolation
http://www.shunyata.com/images/technical_features/dfss-chart.jpg

If the claim is that these images demonstrate the benefits of cable vibration isolators then I call BS. Notice please:

1. The time (5 ms/d) and voltage scale (50V/d). This is clearly a measurement of a 50Hz or 60 Hz/220V AC power line, not speaker or signal level.
   
2. Where the noise is occurring, at the upper peaks. This is not floor or air-borne noise. It’s probably AC line noise possibly caused by a digital power supply on the line or transformer problems.
3. The magnitude of the noise itself, around 50Vp-p but of very high (relative to 60 Hz) frequency. That kind of noise in the line or speaker would be audible if not damaging to components. In an AC line they are easy to filter.
   
4. There are no measurements (in addition to the charts) provided.
5. There is no description of the test conditions.
6. Items 4 and 5 mean this test is irreproducible. No one can refute them because you can’t test under the same circumstances.

Charitably I would say they posted the wrong pictures. If you said these were pics for a 220 V power conditioner I’d say "Hey, it’s cleaning up something! I wonder how they tested..."

Also please note, all these statements above (including BS) are in the engineering domain. All the attacks that follow will be personal, name calling, etc. Well, let them begin.

I will always look forward to careful thought out replies like "Hey Erik, you missed this link which explains...." or "I like mine!" Those are all fine, I’m not challenging your subjective experience, just saying, those pics don’t make sense.

Best,


Erik

@folkfreak

2) Grand Prix Audio racking systems -- which include a variety of isolation methods including ball/cup feet exactly to deal with floor borne vibration (Apex footers)
http://www.grandprixaudio.com/research
http://www.grandprixaudio.com/products/apex#product-features

Well at least these tests and measurements are a little better documented, but not really reproducible nor do they make any specific claims. The charts have no units at all.  In the test results they make no measurements of improving sound quality just vibrations. Not at all the same thing. Material and Industrial engineers have had established methods for doing this for ages. Nice to see someone, anyone, in audio taking up this approach, but whether or not they are relevant to audiophiles is not demonstrated here.


Best,


Erik

As I've said before, testing and measuring the benefits of vibration control in home audio should be easy, and inexpensive. I've yet to see the loop closed.

Doing this work could lead to cheaper and better sounding equipment when we have definite, exact, nuanced information to guide our manufacturing choices. If any of this exists for audio, I've yet to see any of it.



Best,


Erik