@alucard19 I do not own the DH Maria amp. I just linked to it because I think it is the same design as the PeachTree GAN1. The GAN1 is $1500. I have about $600 mods on top of that. I think it is a rather great amp just hindered by the limited connectivity and the SPDIF requirement.
I expect other companies like DH to follow a similar design.
@recklesskelly I learned something new about GAN and Class D.