[. . . ] 4 Removable microphone arm holder for placing the microphone to the left or right of your mouth. [. . . ] For use with the B 29 L battery power supply, MPA V L phantom power adapter, or PT 40 or PT 400 transmitters. The C 522 MS /C 522 MS L is a condenser microphone and therefore needs a power supply. Using any power supply other than those recommended by AKG may damage your microphone and will void the warranty. Connect the phantom power adapter on the microphone cable to a balanced XLR microphone input with phantom power. If you bend the wire too hard it may be extremely difficult to bend the wire back to the desired shape. Adjust the gooseneck so as to point the microphone at the corner of your mouth. To clean the microphone surface, use a soft cloth moistened with water. Phantom power supply: connect to power outlet or insert battery (batteries). [. . . ] Pre-polarized condenser microphone cardioid 20 Hz to 20, 000 Hz 7 mV/Pa -43 dBV re 1 V/Pa 200 ohms 2000 ohms 126 dB / 130 dB 33 dB (to DIN 45412) C 522 MS: 9 to 52 V universal phantom power C 522 MS L: 9 V battery supply through B 29 L or bodypack transmitter, or 9 to 52 V universal phantom power through MPA V L adapter Current consumption: approx. [. . . ]