@laoman iiWi Reviews on YouTube is one of the few places where those Chinese amps are reviewed subjectively. The reviewer got me very interested in the Sabaj A10A which seems to be working well with his KEF LS50 Meta. His reference amp is a Hegel H190 (which is a perfect match for the KEF). iiWi Reviews was very happy with the Sabaj A10A, stating that the amp disappeared and he was just enjoying the music.
However, iiWi Reviews is not the most experienced reviewer, but he's not as ridiculous as Z reviews or CheapAudioMan which hype everything up.
Perhaps it's not crazy that a cheapo Infineon chip amp could rival more prestigious Hypex amps. That said, some YouTuber stated that the Bluesound Powernode (with Hypex amplification) didn't play well with the KEF LS50. He said that it sounded sterile. And it was an issue with slow transient response/current management which made the LS50 sound like car speakers. So he bought a Hegel H190 and never looked back.
So... the confusion never ends.
@goofyfoot ASR members commented already. There's not much of a debate. Like I said, ASR members are set in their ways and won't budge from their "trust the measurements/science" stance.