As I advised in another thread,the response from B & O UK to my enquiry about using a BS3 with my Pioneer LX608 was "Not recommended!"
The user menu of the Pioneer LX series is so all embracing,and,according to the independent tests,the processing capabilities so good,that the benefits of an external processor may well be marginal.
I have been advised by an ISF calibrator that he would not recommend the use of an external processor with the LX series.
This may not hold true of the XD series.
Personally,I would arrange for a B & O dealer to demo a BS3 with one's TV.