I recently built my rack for the CQ-20. I used the “Gator G-PRO-6U-13 Pro Series Shallow Rack Case”. You can see it here along with a Phenyx Pro PTM-10 IEM transmitter and CyberPower CPS1215RMS power strip. This leaves me 1 more open U position in which I could install a wireless mic receiver. I am concerned about ventilation and whether the side mount fan (of the CQ20) will be able to handle this; especially when used outdoors. All suggestions welcome.