Pioneer Dj DJM-A9 4-Channel Digital Pro-DJ Mixer with Bluetooth (Black) - Manual (Page 23)

23
Connections (basic styles)
Connecting external effects units
Connecting to the MULTI I/O terminals
You can use external effects units or mobile devices by connecting them to the MULTI I/O
terminals as follows.
– [ SEND ] terminals (output) → effects unit → [ RETURN ] terminals (input)
– Mobile device connection terminal (USB port) (input/output port) → mobile device
• Be sure to connect external effects units to the [ RETURN ] terminals (input) as well.
Read more: Multi I/O (page 42)
Mobile device
SEND/RETURN
USB (Type-A) port
Effects unit
Rear panel of the unit