Hi there!
How does the arpeggiator works?
Can I sync it to the external MIDI clock?
If not, is it planned in the future?.. 
Christoffer
Currently we have two possibilities to create arpeggios:
- set the arpeggio rate > 0 and play a chord (up to 4 notes are provided). Note that every oscillator has an own arpeggiator, so with the control surface you should select OSC “123” together and set the rate for all three oscillators to the same value
- use the wavetable sequencer to modulate the transpose CC - in this way an arpeggio can be played with one finger
yes, MIDI clock sync for both, arpeggiator and wavetable sequencer, is planned 
Best Regards, Thorsten.
Great! ;D