CDP Output Impedance?

Does anybody know the output impedance of the Marantz CD6002 ?

I am building a B1 and noticed Nelson mentioned that the POT sets the impedance at the input, so before I buy a pot I figured I should get one with the same impedance (if possible) as the CDP impedance.

Im not even sure If this is the best practice but thought I would ask. I cant find any info in the CDP Users Manual, and I cant find a copy of a service manual yet.

Im buying an ALPS pot (possibly Blue Velvet) in AUS if anybody has advice on that also?

Cheers
Dean