Please do your homework before you spend money… Assuming your noise thing even made a difference at output, the Nucleus is a NUC board, and runs ROCK with some tweaks tailored towards passive cooling and differentiation (the home automation stuff).
I don’t know who makes their motherboard for Rhein, but it’s powered by a 2015 N3700 if I’m not mistaken and the images on their website are anything to go by. It seems to be cooled not by using the case as a sink, but by an independent heatsink inside a closed case, which seems rather stupid, because it turns that fancy case into an oven. That that thing is not presented as a $2000 joke* is not a testimony to smart hardware design, it’s an indictment of the people reviewing it.
- there’s more to it than that, obviously, but for heaven’s sake people, we’re talking raw power that benchmarks in the same category as a $80 Raspberry Pi4. The delta with an 8th gen i3, so the thing you get in a Nucleus or can buy for a couple of hundred off Amazon is something around 3:1. But hey, the “mystery of extracting and purifying the essential music” and “keep the intactness of music”, eh.