B&O cartridges are Moving Magnet ( they are actually Moving Iron but let's not confuse the issue!)
What you really need to do is make up a custom set of wiring. Most RIAA amplifiers use RCA plugs and you will need to use an adapter. However if you want remote control, you will need to have a connection from the 6 & 7 pins on the Beogram to the Beomaster. The Beogram and the Beomaster actually use different pins in this case so you need to connect the two pin outputs to each other.