It is absolutely possible to connect two DP32 together. First connect the midi cables. You need to have reference monitors that have a two channel input to the rear of the speakers. Like the BX5 systems they have a 1/4” and xlr that can be used simultaneously. Great sounding speakers. So the monitor out of the do32’s connect to the speakers. Set the master and slave for each DP32 go to midi setup to do this. If your not using two dp32’s, say one is a do24 and the other is a do32 you will have a tenth of a second lag on the slave unit. Just be aware and use the jog dial to correct error on slave unit before recording or playing.