Oh, Peter Belt. Thanks for reminding me, Jerry. No, those little sticky triangles did nothing for my system. Coloured electret foils, anyone?

I tried Peter Belt stuff when he was feted in the hifi mags

If any of them worked at all it was very, very subtle.
So subtle it was undetectable.

Okay, I share my experiences..

I've had quite a bit of both mains and signal ground boxes in my system and a long time to play with it in and out.

I could not hear one ounce of difference of any of it!
Connecting more and more did not help.

I took it all to a pals multi way horn system. We put in, took it off, put it on, over and over, really tried to be objective - nope, neither of us could hear it.
Now, we can hear the difference between PSU's, horn profiles, signal and power valves, compression drivers, bass drivers, crossover point variations, headshells, tonearms, cartridges, armboards OP amps, let alone amps, turntables, dacs, preamps etc etc etc.

These boxes just did nothing for us..

So let your ears decide...

I’ve got some Shunyata cable elevators (mk.ii models). Of course there’s the marketing blurb around what they do and how they work; I took it with a pinch of salt. Anyway I shouldn’t post about them in this thread because I wouldn’t be without them now. My brother was a skeptic (I couldn’t help bursting into laughter when I tried to explain how they worked because of his raised eyebrow and unimpressed expression - I felt stupid).

However, I played music that we both knew well and took them out one at a time from under my speaker cables. Then I put them back in as the music played and his facial expression transformed from one of unimpressed disdain to a wide eyed ‘you’ve got to be kidding me?!’ look.

So they sit there, but it seems they do what they say on the tin.

This thread is a great exploration as to why it’s important (IMO) to keep an open mind in this hobby; somethings I wanted to work (supertweeters) just didn’t (for me) and others I had no idea if they would and the claims sounded like bs, but I gave them a go and my horizons have been broadened.

Re: all of the sorbothane comments, have any of you tried the RDC combi bases? They compliment the RDC cups - the cups fits inside the base, which has a thin slice of sorbothane with a circle cut into the middle. I always wondered why this hole was cut and it sounds (from what I’ve read in this thread) that it allows the sorbothane to compress more easily, allowing it to work in optimal conditions. Anyway, they’re a welcome addition in my system as I recently added them to RDC spikes and cup combos that were without and it improved the sound further.

^ Worked for me!

Better defined imaging, more focussed.
I used a 'proper' marker though - very wet and thick ink.  Took a while to dry.

Maybe it was just the green pen that didn't work then, LOL

Maybe your handwriting wasn't good enough Paul - back to school!

No surprise there then!  What about bottles of 'deionised' water placed near your electricity meter - did it make the TV picture any sharper?

Hard to put it into words as it's a mind-visual thing.

Essentially, when we normally ground something, we talk about sinking noise and interference to ground. We don't talk about a return path, just that Mother Earth is a big, stable sink for noise and takes in far more than it gives back.

Now think of a grounding box as a micro-Earth, made from materials designed to enhance, in a compact form, its ability to sink noise and crap.  This is nothing to do with hum, it's the noise that exists in the ground plane of electronics.  Connecting the ground plane of, say, your preamp to the box helps to sink away that noise on account of it being a very low impedance ground (I think that's why the grounding cables have such an effect on performance).

We all know that interference isn't always heard as noise, it quite often manifests as intermodulation: one frequency modulating another.  Take that noise away and distortion reduces.  This is what I hear when I connect my grounding boxes to the system.  Lowered noise floor, enhanced clarity and deep, deep soundstage.