Thanks, Antun. Good to know. Always a stickler for detail and accuracy! 
Why would anyone want to use an RCA rather than a BNC, on a BDP digi out? 
cheers
Hi mate!
Well, RCA is far more common than BNC for one. In fact, my BDA-2 DAC is equipped with 4 RCA inputs as a part of Bryston's "special order" program. It Works better for my needs.
All electrical inputs on this DAC are transformer-coupled to minimize variances in impedance.
My solution to the BDP BNC problem would be to buy a coaxial cable with a BNC connector on one end and an RCA on the other. BNC-RCA ataptors are typically of poor quality and can change the impedance which in a way nullifies the advantage of using a BDP as the source, since BDP's outputs are also transformer-coupled.
That being said, differences in audio quality of one over the other are a subject for an academic discussion.
Cheers!