The built in Arpeggiator is activated simply by using the ARP switch. The Pro-1 will take any incoming MIDI or Gate signals and apply it to its built-in arpeggiator algorithm. There are two settings:
- UP - Any incoming notes will arpeggiated from the lowest to the highest note played
- UP/DOWN - Any incoming notes will arpeggiate from the lowest to the highest, then back down to the lowest
The tempo can be controlled using the FREQUENCY dial in the LFO/CLOCK section.
To exit this mode, simply set the ARP switch to OFF.