2.The Sync option is specifically for routing Midi Clock between devices. This will come into play with Note Repeat and the Arp option.
When using the MPK you may want to use the Note Repeat function on the pads or the Arp with the keys. The MPD will also allow Note Repeat with the pads. Both of these options repeat notes at a specific time division following a specific tempo.
The MPD or MPK has an internal MIDI Clock and the ability to use an external clock source. This means the tempo of your project, and inevitably the tempo of Note Repeat and the Arp, can be chosen by tapping the Tap Tempo button on the MPD or MPK or by having the MPD or MPK listen to Ableton’s tempo. This is purely based off personal preference.
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