Hi, i am a SHD user too!
I am using all digital inputs, fixed set to 24bit-96KHz.
SHD can’t play DSD and does best at 24/96 for me.
A laptop windows PC is connected via USB to the SHD. Music can be played with f i. Audirvana 3.5 (legacy)from laptop through SHD to my monoblocks and/or from other sources like: coax, optical, usb (stick with special playlist) and (w)lan!!!
Even Spotify music can be played via Volumio!!!
I am using the SHD also for digital correction, digital crossovers and/or experiencing with Dirac live, so yes am using a SHD plugin and the Dirac software.
Anyway you could do a trial via other inputs and/or if you have a PC/laptop from there