DSP for Volumio 3

Does anyone know what DSP options there are for Volumio 3?

As DSP has been touted as one of the benefits for Volumio 3 over Version 2.
As there isn’t anything in the plugins list on the Volumio software itself and it isnt clear to me in the list of plugins on the forums what can be used.

I just wish it was a bit clearer on what works and what doesn’t