Has anyone tried these?
They are wood boxes with stuff inside and a "ground" banana jack.
You can connect one to mains ground, or to a loudspeaker or audio ground, etc. to improve everything.
Tripoint Audio Troy Signature SE Grounding Unit with attached grounding wire, going for $20,000 USD weighing 20lbs and African Bubinga wood, and the Emperor model costing more. I like the 10 year warranty.
They make the $9,000 full-featured
Entreq Silver TellusII look good as a bargain. Many units for a few hundred dollars from china too but made of pine.
"They help to lower the noise floor of all attached audio components by optimizing the relative ground potential which results in a much more musical presentation."
"I have tried the ground box on my TV with very good results too. Images become brighter and colours are more vibrant."
... very sophisticated crystals and internal tuning, secret ingredients such as tar, dravite, schorl, quartz, cotton, graphite, silver.
Very good for sound. The manufacturer recommends burn-in for at least 72 hours.
How do nut bars make enough money to afford this?