Hello,
When at my laptop, I use a Dragonfly connected to studio monitors. Roon works great. However, it doesn’t seem to recognize the Reference 4 Systemwide correction software, even though Dragonfly is selected as output.
The Reference 4 works fine when playing iTunes through the Dragonfly, but it’s not recognized by Roon.
Not an expert, but I believe you can copy the Reference 4 curve into the DSP options somewhere.
Check out the Convolution filter option or the EQ filter options.