Miniature Gooseneck: 905R The Astatic miniature Gooseneck 905R is a line-cardioid, quick-mount, small gooseneck condenser microphone developed for conversation and music pick-up. The line-cardioid complete design (Locus TM technology) is developed to attenuate undesirable resources outside of the +/- 45 level popularity position while successfully "zeroing-in" on the preferred speaker. Astatic's Locus TM technological innovation provides a considerable enhancement over other line-cardioid microphone due to diaphragm dimension and low-noise gadgets. The 905R is appropriate for programs such as conference rooms, courtrooms, home of praise and anywhere a gooseneck microphone with maximum range pick-up is required. Locus TM technological innovation allows the installation software to use the 905R in position of more time miniature-gooseneck microphone without compromising efficiency. It is the best remedy for the person who wants not to be preoccupied by an intrusive transducer. Specifications: Operating Principle: Condenser Polar Pattern: Line-cardioid Frequency Response: 70Hz -18KHz Sensitivity: -30dBV (32mV) @ 1 Pa Impedance 300 ohms Maximum SPL: 126dB, 1% T.H.D., 1KHz Self Noise: 18dBA Power Requirements: P12, P24, P48, 2mA Connector: 3-pin male XLR type Polarity: Positive pressure on diaphragm corresponds to positive voltage on pin 2 relative to pin 3. Finish: Durable matte-black urethane Dimensions: See drawing) Net Weight [Mass]: 4.3oz [0.12Kg] Packaged Weight [Mass]: 8.0oz [0.23Kg] RF Immunity: Meets or exceeds EN55103-2, E1, E2, E3 and E4 RoHS Compliant