The AMS-XLRMA is a metal male XLR connector equipped with a high quality terminal block for audio connections, a switch-selectable audio attenuator and protection from phantom voltage. The connector mounts in AMS mounting frames and in standard D-style cutouts. The XLR output is equipped with a Unity/Attenuated level switch that provides a nominal 50 dB of attenuation to feed the microphone input of a mixer-amplifier or other equipment with mic inputs. Without attenuation, the AMS-XLRMA may be used solely to block phantom voltage from the mic output of the equipment feeding the AMS-XLRMA terminal block. With attenuation, the AMS-XLRMA provides a phantom-protected mic output for a line-level audio source feeding the AMS-XLRMA.