Rockville RCM01 Pro Studio Recording Condenser Microphone Mic+Metal Shock Mount Rockville RCM01 Pro Studio Recording Condenser Microphone Mic+Metal Shock Mount. RCM01 condenser microphone. Full metal high quality construction. Polar Pattern: Internally Polarized Condenser Cardioid Design. Large diaphragm for smooth, natural sound and low noise. Power Requirements: 48V DC phantom power or computer sound card (can connect to the phantom power channel of your mixer or can connect to your laptop or computer). Uni-directional. Sensitivity: -27dB&plusmn;2dB(0dB=1V/Pa at1kHZ). Output impedance: 200Ohm&plusmn;30%(at 1kHz). Standard operating voltage: 3V. Operating voltage range: 1.5V-10V. Current consumption: less than 500uA. Voltage deduction characteristic: within 3dB at 2V. S/N ratio: More than 24dB. Frequency Response: 30Hz - 20 KHz. Fixed Crossover Filter cutoff frequency: 40Hz---16 KHz. Load impedance: Greater or = to 1000 Ohms. Equivalent Noise level: Less than 18dB A (IEC581-5). Max. Input SPL: 126dB(THD&le;1.0% at 1kHZ). Electrical current: Greater than 4.8Ma. Microphone body net weight:325 Grams (0.72 Pounds). Microphone Max.diameter 48mm (1.89&quot; inches). Microphone Length 157mm (6.18&quot; inches). Microphone material: steel grille + Zinc alloy (handheld part). PCB Layout: Surface mount