quote from futureproducers.com
"I need to get Cubase to sync my AKAI MPC1000, as this is where I started to sequence the song I was working on. This is pretty straightforward as I quickly find my way to the "Sync Setup" window and configure the "Send MIDI Clock" to talk to the MPC. I do not see a "Receive MIDI Clock" option... it would be nice to use the MPC as a remote control for SX, at least for the transport window. Steinberg tells me that SX2 can only set be the midi clock master.
Steinberg told me one of the reasons is that SX can be sync master and slave at the same time, but due to the low resolution and unstable nature of midi clock it would be bad for the overall timing of the system if SX would be midi clock slave while being the clock master for a tape machine per MTC. The midi clock would affect the whole precision of the system timing in a unfortunate way. They also said that they are aware of the wish to have SX set to midi clock slave mode, just like it was with Cubase VST 5."