DSP capabilities REPOST
What can the DSP do, can it do any analog modeling stuff or is it just eq and dynamics etc
It can do a lot of stuff. If you program it with SigmaStudio, you can use everything that's available on SigmaStudio for the ADAU1451
https://www.analog.com/en/design-center/evaluation-hardware-and-software/software/ss_sigst_02.html
However, this is quite complex and I won't recommend it to beginners. If you use the integrated filter designer in HiFiBerryOS, it supports filters, crossovers, delays:
https://www.youtube.com/watch?v=0RV_Ckszcv4