Not sure but this may do the trick.
I use this product from M-audio to split a coax or optical signal,
however the output
is coax and optical. If your cambridge has coax then you should be
fine.
It is powered and comes with a power pack to convert to 12v.
I bought it from the U.S. and had it sent to Aus for about $80
Cant remember the shop.

http://www.m-audio.com/products/en_us/CO2-main.html

Dezza.