Camcorder microphone series rode vm transducer type condenser directivity supercardioid suitable for video camera public speaking podcast interview sensitivity 1khz 126 mvpa frequency response 40 20000 hz features integrated windshield shock mount led display dimensions 250 x 65 x 102 mm capsule diameter 127 mm noise level 134 db transmission mode cable signal noise ratio 74 db inherent noise 20 dba impedance 200 ohm battery supply funct