How to test and not test: YG Audio Racks

Here’s a great example of something I just saw in Stereophile as well, the half-test. When a manufacturer does some sort of test without closing the loop on meaning and efficacy.

Take this lovely video from YG Acoustics, and I take the testing at face value:

https://www.yg-acoustics.com/product/rack-series


It would be really nice if someone actually showed this had a benefit to the output though.