You might want to look in this thread for clues about using Dirac Live with Roon:
https://community.roonlabs.com/t/how-to-enable-dirac-live-with-roon/2753
If you wanted to do this with miniDSP, you could use this all-digital unit before your DAC:
https://www.minidsp.com/products/streaming-hd-series/shd-studio
Before you go nuts with Dirac though, consider that Roon does have pretty full feature DSP capabilities built in. You can do some elaborate bass correction using parametric EQ's without Dirac if you know what you are doing.
https://community.roonlabs.com/t/how-to-enable-dirac-live-with-roon/2753
If you wanted to do this with miniDSP, you could use this all-digital unit before your DAC:
https://www.minidsp.com/products/streaming-hd-series/shd-studio
Before you go nuts with Dirac though, consider that Roon does have pretty full feature DSP capabilities built in. You can do some elaborate bass correction using parametric EQ's without Dirac if you know what you are doing.