[. . . ] The DTH-4 is dynamic cardioid and incorporates a neodymium magnet--which has more than twice the sensitivity of conventional microphones-- and our diamond-coated diaphragm for flawless transient and frequency response. [. . . ] The rear rejection of the DTH-4 is typically 20 dB less sensitive than the on-axis response. The cardioid pattern also works well when trying to get a good sound on acoustic instruments. The Amorphous DiamondCoated Diaphragm is a patented technology that coats the diaphragm with a superthin layer of diamond, which offers many advantages over conventional laminating or other coating materials. In return, it keeps the diaphragm super stiff but ultra light, which is needed for extended high-frequency response and sharp, crisp highs. Pick up pattern: Cardioid Front-to-back rejection: 20 dB (typical) Impedance: 400 ohms, balanced Frequency response: 50 Hz to 16 kHz Sensitivity (at 1 kHz open circuit voltage): -48 dBV/Pa (1 Pa = 94 dB SPL) Maximum: SPL 140 dB Case (housing): Die-cast zinc Finish: Black rubberized paint Pop filter: Dual, integral, open-cell foam Phasing: Positive (inward) pressure on diaphragm produces positive voltage at Pin #2 Weight: 9. 92 oz. The microphone shall have a black rubberized finish that can withstand the toughest conditions. The connector shall be a three-pin XLR equivalent audio type. PROXIMITY Proximity effect is a naturally occurring phenomenon in unidirectional microphones. This effect is a function of distance from the diaphragm to the source and increases as the diaphragm is moved closer to the source. 2-YEAR LIMITED WARRANTY NOTE: For details, refer to the warranty statement. For copies of this statement, contact Peavey Electronics Corporation, at P. O. [. . . ] For copies of this statement, contact Peavey Electronics Corporation, at P. O. [. . . ]