I’d be more inclined to have a go at these, USA made sold and backed.
https://classdaudio.com/amplifier-kits.html
Proper linear power supplies with Toroidal transformers, not noisy switch mode ones.
And these are far less costly than the Euro alternatives, also come in kit or assembled.
And these guys are soon to release a GaN technology Class-D, they know where the progression of Class-D sound quality is coming from
Cheers George