They claim to be unbiased but travel and meals are provided by the manufacturer at times, I believe. I trust that listed components don't suck but they list KEF LS50s as Class A and I just don't hear it. Also Magnepan .7s are listed as class C and I think they are better than that, although set-up can be tricky. So, Stereophile is a source but not the absolute bible on things audio.
Stereophiles 2021 Recommended Components is now on line.
Enjoy
https://www.stereophile.com/content/recommended-components-fall-2021-edition
No A+ for preamps, amps or integrates, but there are A+ for digital processors
Cheers George