XLR and RCA interconnects in the same system?

I have a balanced connection from m preamp to amp. just cuz. The rest are mostly single ended. Except for a product that has only balanced out. The debate over balanced and single ended is IMO mostly theoretical With no much difference between them.
The quality of the interconnect is WAY more important than the form of RCA or balanced.

Thanks the only reason I bother is that I have the Cambridge azur 840 CD player and I just got 840 azur preamp the CD player as a balanced out and the pre has a balanced in and I have been told that the 840c really reacts well to balanced cables my amp is a McCormac DNA1 which is great but only has RCA inputs
Thanks Again
mxb289

Hi Mxb, you are a brand new member here,... I researched, and your CD has balanced and unbalanced out. Your Pre has balanced and unbalanced in, also balanced and unbalanced out. Your choice. My PRE (which I like) has only balanced out. My AMPS (which I like) have only unbalanced in. My IC (which I like) (so), I had made up xlr-rca. end of equation. find what works for you.

Hi Liz...you're very wrong. If (and only if) your system is completely balanced from beginning to end, there is a definite advantage.. providing the components are truely differentially balanced. Most components that sport XLR connections are Not balanced and therefore provide no benefit in using balanced interconnects..they are there to impress the purchaser that the circuit is of a higher quality. I am using an all Ayre system which is indeed diferentially balanced...a more expensive circuit having a seperate plus circuit, and a duplicate but phase reversed minus circuit. You can clearly hear that balanced cables sound better than any RCA terminated cable. The sound is quieter, more open, with greater ease.

Fully balanced is always best , ( balanced in and out ) but as Kal mentioned there is still noise reduction with each balanced cable used . I have A/B/A tested this many times over the years and in many , many systems and the results are always the same .