I must try the cable enhancement wraps. I’ll see if I’ve enough minerals left.

Thanks, I will give it a try, but need to order more cable, spades and banana plugs.

Yeah, really interesting all this ground box testing, but very time consuming. Do you think doing the cable mod on interconnect’s between pre and power amp would be worth it? In my case it would be between dsp and active speakers.

I won’t mix AC Earth with any signal ground. When I tried the AC Earth on the ifi AC purifier, I only had that connected to the Ground box. At the moment I have 2 Ground boxes linked together, but have all signal(Analogue and Digital) connected to them. This was advised by a dealer in the UK...

I have 1 pink quartz crystal about 1 inch diameter in each ground box. Seems to be a decent balance to the sound.

@cdacosta Would you I have the 2 boxes connected together at the moment, with all the cables connected into the bigger box, giving like a star ground connection to reduce the potential difference between components.

Last night I modified my XLR cable that goes from my Dac to my DSP. This has been the biggest improvement so far and the system is so much more musical now and has much more inner detail.

The first box I pictured above weighs 3.5kg. I made this second box with 3 binding posts and a different setup inside and it weighs 6.3kg. I see internal pictures of an Entreq box with 3 binding posts joined with copper inside, so I took inspiration from that.

I have made several different cables to try with the box and connected them to my Dac’s digital and Analogue connections and to my DSP using DIN connectors as it has spare midi inputs/outputs that share a common ground with the XLR connectors. - Really good results and also eliminated a ground...

I followed your guide as best I could with the materials I could get at the time. The cable used in that box was ElecAudio FC125TC, which is 2.5sqmm OCC copper with I think 221 strands. It works really well, but was a pain to prepare due to all the fine strands. I later got a delivery of the...

After reading all the great info and positive results in this thread, I’ve made a couple of Ground boxes and have been trying various combinations of connecting them.

Looks good. Have you tried without the fabric to see if it’s best with or without?

Has anybody compared The Nano Liquid to Mad scientist Audio Graphene contact enhancer? I use the Mad scientist stuff and find it very good. It’s much cheaper than the Nano liquid too.

Could you post a picture of the copper/RFI setup in your ground box please?

This is a very good description of the effects of the ground box(s). I am only as far as a makeshift box with only Magnetite and I’m experiencing a lot of what is mentioned above, particularly the soundstage width, height, depth and 360 immersion.