Worth mentioning the built in clock link to get rid of jitter. I had a BB 250 that had one and very useful it was too with the matching transport. I read somewhere that a new generation of transport were compatible with the clock link in these Arcam BBs, and had given them a new lease of life, but I can't remember the details.

Edit: can't find the details about a new transport but I looked it up and it is Deltran which I know DPA used and also Colin at Chevron Audio.