Mine is still from the HP era of course. I did some basic testing and its performance seems better then anything I own can measure.
It can have an OCXO fitted internally and will fail to it. I will see if I can get some good pics later. It does seem rather entertaining that a 10 MHz distribution amp would have firmware, a processor, ram, and it communicate via SCPI. I admit I have lusted after one for quite some time, I've made several lowball best offers on them over the last year or two. One was finally accepted.