I've just purchased a new used GG, being shipped from Lampizator in Poland. It has 512DSD capability and will connect to my computer with USB. I currently have a Roon/HQP set up on my computer for my current DAC, which is an ethernet DAC (NADAC mch) which I will continue to use for my mch files. Could you tell me the settings you use on HQP to connect to the GG? I will be upconverting my DSD files to either 256 or 512. I have quite a few DXD352 files and lots of PCM192 files that I will probably keep native. Thanks, Larry