connecting a Boss RC 202 to a DJM 750 MK2

Hey Kevin,

You certainly can connect the 202 to the 750MK2 via the S/R loop, here's how...

Connect the SEND from the DJM to the 202's inputs, then the outputs back to the DJM's RETURN connections. 

On the DJM's S/R controls at the top left of the mixer, set the selector to 1/4" and the return type to INSERT. Press the on/off button with the level knob at 12 o'clock.

To select the source you're sending to the 202, set the FX channel selector down in in the beat effects section of the mixer.