Hello,
First contribution here.
Did you ever tried the SMSL AD18? Or the FX-Audio D802?
It's two cheap FDA amplifiers with good reputation in France ( https://www.qobuz.com/FR-fr/info/Hi-Fi/Bancs-d-essai/S-M-S-L-AD18-Qobuzissime-pour-cet179313 )
Thanks