This is the only thing I can find:
Here are some specs for the professional dCS 992 Master Clock:
AES/EBU and SDIF-2 Master Clock. Sample frequencies 32, 44.1, 48, 88.2 and 96 kHz
The dCS 992 Master Clock is a high stability reference generator designed for studio and live recording applications. The unit provides reference clocks to support systems sampling from 11.025kS/s to 192kS/s or DSD, via AES3 or SDIF-2 Word Clock formats. It offers a variety of “Superclock” options up to 256Fs and can generate all the commonly used sample rates from 11.025kS/s to 96kS/s, and output up to 10 different sample rates simultaneously phase locked together. In addition, the relative phase of each output may be adjusted by plus or minus 1 sample, in steps of 1/128th of a sample. With the dCS 992, synchronizing all the components of a multiple sample rate digital audio system becomes a simple and painless task. The unit can operate in Master mode from its own precision TCXOs, or can slave to an external source, such as GPS. It can “learn” the frequency of the external source, such that if this is interrupted for any reason, the unit carries on seamlessly at the learned frequency. If the external reference reappears, the unit reacquires lock in a very gradual and graceful manner, ensuring that any recording work is not interrupted. The dCS 992 is supplied with an easy to use Windows based remote control, but may also be operated from its front panel.