NXS2 KiNK Performance and how he sync his TR-9?????

Hi guys,

Someone knows how KiNK link his TR-9 in sync with the NXS2 in this performance?

https://www.youtube.com/watch?v=0QMZ1tvEhv4&feature=em-subs_digest

In the video you can see some MIDI cables but... something is hided i think.

Thanks!