Behringer Europort PPA2000BT - Powering Up and Wireless Setup; Initial Level Adjustment

6,Power up all external devices.
7,
Power up the PPA2000BT/PPA500BT by pressing the POWER button.
8,If you are using BEHRINGER wireless microphones, plug the wireless dongle into the
DIGITAL WIRELESS USB input, The DIGITAL WIRELESS LEDs will light up when the
wireless microphones become active.
9, Slowly turn the MAIN LEVEL CONTROL knobs up 1/3 of the way.
10, Adjust the relative levels of microphones