I cannot speak for the EtherREGEN since I have not tried one yet, but I can speak for UpTone. I own their Mac mini conversion kit powered by their JS-2 LPS. Alex Crespi supported me during and after the installation and his products made a tremendous positive impact on my system. I doubt that they would offer anything that they didn’t believe in.
David

Nucleus Roon Server w Uptone JS-2 LPS.
818v3, 8000SE, IsoAcoustics Titan Theis.
Denafrips Arcas Streamer
Dual SVS SB17 Subs w IsoAcoustics Gaia 1.
AQ Vodka/Diamond Network/SL Cables.
Tempus network switch.
Muon-Pro network filter.
Shunyata Everest, Shunyata Omega and Sigma Power Cables. 2x CAD GC1