Hi Skip.
I'm a big fan of C-J equipment.
I ran a Premier 17LS with a premier 11 a for many years.
I also ran a C-J EF1 phono stage with the above.
I found the bass to be lacking, so purchased a C-J MF 2250 solid state amp, and tried bi- amping. That didn't work out very well.
I finally sold the 11a and purchased a C-J LP66S tube amp which has a small amount of negative feedback. This helps the base tremendously!
Then I went wild during Covid and bought a pair of SVS sub woofers. Non ported with foot isolation on the floor.
I am currently very happy with this setup!
I know this doesn't directly answer your question, but I hope my experience will help you with your delima...