Though a different product, a year or two ago there was a now deleted thread on the QSA jitter reducer. That’s when I came to think their claims were unbelievable.
QSA 15 amp Jitter Power Conditioner
$119.00

QSA 15 amp Jitter Power Conditioner
$12,500.00

It was mentioned by a poster in the deleted thread that a receptacle "looking" exactly like the above, without the little stick on tape, was selling on Alibaba for $1.00. However, as the scientist at QSA state in their ad:
"The QSA Jitter Power Conditioner may not look like much, but it’s treated with QSA proprietary metallurgical process, and will transform your audio component’s performance with more resolution, balance and naturalness. "
When the deleted QSA thread first came to light, I looked into the company and if memory serves discovered that the owner was a marketing major in college. Could not find where I found this to reverify now.

