AP Rule updated
http://tokyo15.com/en/contest-divisions/ap-division/
Here is the change.
Change about Connection to the Sound System and Power Supply
After several inquiries about connecting a contestant’s own music equipment to the venue sound system, we decided we will change the rule about this issue. If plugging their own music/sound system into the speakers that the venue/organizer has prepared is a necessary component to fulfill the contestant’s freestyle concept, we will provide one Line-In (mini headphone plug) input and one power outlet for the contestant’s use. Pre-approval from the AP Division judges and the contest organizer is required, and will be decided based on the performance concept description submitted by the contestant. Again, a sound/power connection will not be unconditionally given to all contestants, and must be specially requested and approved.
(Added on 2015.5.11)