How much will BEOCREATE work with VOLUMIO?

Hi Folks, did some one has experience with DAC Hifiberry BEOCREATE running on Volumio 3 with Raspberry 4? I would like to buy this board as it has DSP and therefore can Run 2.1 I also posted this request in the Volumio Forum without feedback. I have some experience with Sigma Studio due to projects with TinySign DSP and I think I can upload the DSP to EEPROM with HifiberryOS https://www.hifiberry.com/beocreate/beocreate-doc/beocreate-first-steps/ 4 As I am only a copy paste guy I would like to first ask how far I can get it working: A) I found after research that when you purely let it run with Volumio it only support SW Volume Is that correct? B) Is it possible to get access over Volumio to TCP server for upload from SigmaStudio the DSP setup C) Is it possible to run DSPToolkit from Hifiberry to keep the HW volume and get direct access to DSP parameters with Volumio 3 D) will the GPIO of the DSP work even with no HifiberryOS as I would need some programmed DSP functions like mute. Maybe some guys have experience? Kind Regards Korniman