Product Detail Generating element: Copper-wound dynamic with neodymium magnet structure Body: Steel body with zinc die-cast bottom ring Frequency response: 28Hz to 18kHz Impedance: 600 ohms balanced Output level: -53.9dB @ 1,000 Hz . The "Heil PR-40 Dynamic Studio Recording Microphone" is best product for you. We recommended Heil PR-40 Dynamic Studio Recording Microphone