Stereophile magazine has never been known for science, mostly pseudo-scientific, unsubstantiable claims. They still insist that double-blind testing is not suitable for audio. I used to subscribe to the magazine, but would get infuriated at the "reviews," especially at the unabashed glowing reports of what is obvious snake oil.
OTOH, I have owned a Carver magnetic field power amplifier, and I liked it very much. Bob Carver is a audio genius.