Official comment
Hello Austin,
As you checked Audio MIDI Setup and found nothing there, please see the FAQ for DDJ-SB2 from the link below and see below Q5 and click "this link" shown below.
Q5: The DDJ-SB2 is not recognized by the computer.
"Please see the effective workaround from this link.
Replace “DDJ-ERGO” with “DDJ-SB2” as you read the instructions."
http://faq.pioneerdj.com/product.php?c=649&lang=en&p=DDJ-SB2&t=faq
Thanks,
CRM, Pioneer DJ