@SimonInAustralia
Day 2-3 of you writing things on a topic that you don't fully understand. The articles you provided links to do nothing to back up your claims. I posted several references to help you understand the topic. Please read again to educate yourself.
Word Clock only applies to syncing two digital audio sources. A DAW, an Audio Interface, and an MPC connected via analog outputs does not require Word Clock. There is no two digital audio sources that need to be locked.
If you connect your MPC to an AD/DA converter using S/PDIF, only then will Word Clock come into play. In our discussion, no member inquiring assistance has mentioned they are using 2 digital audio sources. Here is another source on Word Clock for you:
https://www.sweetwater.com/forums/showt ... Word-ClockMTC is Timecode Sync. I understand how Timecode and Word Clock can be confusing. But they serve different purposes.