SM Pro Audio M-Patch Active-1: Precision Monitor Control Plus Studio Talkback and USB Audio I/O - Manual (Page 12)

SM Pro Audio Page 12 of 16 ACTIVE-1 manual
6 APPLICATION
Connecting Active speakers directly to the output of the ACTIVE-1 Monitor Controller.
When connecting PASSIVE speakers, you must first connect the output of the ACTIVE-1
to your amplifier and then connect the amplifier to the speakers.
Do not connect the OUTPUT of an amplifier to the ACTIVE-1 controllers INPUT!