Superclock is a format used exclusively by Digidesign in their ProTools series of software and hardware. It is a clock reference that is 256 times the sampling rate. In theory this makes the clock more accurate because there are so many more pulses in the data stream. When interfacing with a ProTools system, make sure the output of the clock generator is set to Superclock. When incorporating regular Word Clock devices along with a ProTools system, it is necessary to support both formats simultaneously. The Lucid GENx6 will only do one at a time, but can be locked together with another GENx6. The GENx6-96 and SSG192 can support both formats simultaneously.