The APM is a microphone base designed to be used with the CMX series gooseneck microphones (or any other gooseneck microphone with XLR connector) on any amplifier with microphone inputs. There is a female XLR connector on top to mount the gooseneck microphone and a male XLR connector at the back to connect the microphone cable. The APM microphone base is very stable and features the same design as the APM paging microphones to blend fully with the other equipment.