I have owned the Acutus with new motor (not Ref) and Raven AC1. Not exact model you are asking but similar.
Acutus: More detailed and airy presentation. I had severe footfall issues with suspended wood floor. I need to sneak around like a ninja to avoid skipping. Even though it can accomodate different arms, the platter tilt to the arm side and if arm is heavier than SME 5 and the converse is true. You can spend a lot of time dialing in a precise setup but when the springs are set into motion, I have some doubts whether the setup is preserved. The manual says don't obsess with setup and you have to be happy with that philosophy.
AC1: The quantity of bass was not more than Acutus which surpised me, The texture of bass is better and midrange is harmonically richer. Very easy to setup and immune to footfall. Accomodate multiple arms so this does it for me. Table does not have topend air like the Acutus.
The Acutus is like an OTL amp and AC1 is like a Jadis.
Acutus: More detailed and airy presentation. I had severe footfall issues with suspended wood floor. I need to sneak around like a ninja to avoid skipping. Even though it can accomodate different arms, the platter tilt to the arm side and if arm is heavier than SME 5 and the converse is true. You can spend a lot of time dialing in a precise setup but when the springs are set into motion, I have some doubts whether the setup is preserved. The manual says don't obsess with setup and you have to be happy with that philosophy.
AC1: The quantity of bass was not more than Acutus which surpised me, The texture of bass is better and midrange is harmonically richer. Very easy to setup and immune to footfall. Accomodate multiple arms so this does it for me. Table does not have topend air like the Acutus.
The Acutus is like an OTL amp and AC1 is like a Jadis.