Replace the CDP first.
I listened to the Naim CD5i with the Arros using a Nait 5i integrated and it sounded good although the room was probably too big for the speakers. The Totem Forests sounded better with that pairing. I think that the CD5i could sound extremely good with the PrimaLuna amp and the Arros in the right sized space.
I own a Cambridge 640C and really like it in combination with a fairly forward but highly resolving ss amp and hard to drive sealed bookshelf speakers. The 840C is a noticeable step up with better DACs, parts and upsampling. I have only heard it briefly, but it is much better than anything they have done previously.
Overall, I think both the Naim or Cambridge would mate well with the Totems and PrimaLuna, and I think you would notice an improvement right away. The Maim is going to boogie a little harder and get your toes tapping. The 840C is going to paint a prettier sound picture with more delicate textures and nuances. I predict both the Cambridge and Naim will do a much better job with the bass than your current player.
I listened to the Naim CD5i with the Arros using a Nait 5i integrated and it sounded good although the room was probably too big for the speakers. The Totem Forests sounded better with that pairing. I think that the CD5i could sound extremely good with the PrimaLuna amp and the Arros in the right sized space.
I own a Cambridge 640C and really like it in combination with a fairly forward but highly resolving ss amp and hard to drive sealed bookshelf speakers. The 840C is a noticeable step up with better DACs, parts and upsampling. I have only heard it briefly, but it is much better than anything they have done previously.
Overall, I think both the Naim or Cambridge would mate well with the Totems and PrimaLuna, and I think you would notice an improvement right away. The Maim is going to boogie a little harder and get your toes tapping. The 840C is going to paint a prettier sound picture with more delicate textures and nuances. I predict both the Cambridge and Naim will do a much better job with the bass than your current player.