Yes No EAR acute cd player into my pathos tt ?.

I once had an EAR Acute into an EAR 859 integrated amp. It worked just fine.

Yes, I do this all the time with two Pathos Classic One MkIII integrateds running mono. You can set the output of the player to Max, then control the volume from the integrated.
Just be sure at initial setup that you start with level down to minimum on both components and adjust accordingly. It's the safe, sensible way to establish the control of the system.

Right. As Douglas said, make absolutely sure the volume on both the Acute and the Pathos are ALL THE WAY DOWN before you begin playing. If you trip up there, you may find yourself blasted into the back wall of your listening room. Quite an unpleasant experience.