Been there and done that using a Quad CDP and Quad integrated. Mechans is correct. Using the fixed output on the CDP would be preferred unless the PrimaLuna does not have a remote and you crave that function. In that case try the variable output.
How to connect the Quad 99 CD-P to PrimaLuna
I just bought a QUAD 99 CD-P from Audiogon. I have a Primaluna Prologue One. I am not sure how to connect the cd player to the amp. The cd instruction manual says that one should never try and connect the Quad directly to a power amp. But it doesn't mention anything about an integrated amp. So the question is: can I connect this cd player directly to my PrimaLuna using the fixed output(there is a variable output also) feature of the cd )?