Boytone BT-68SM Pro Studio Recording Condenser Microphone Mic plus Metal Shock Mount. Aluminum 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 yours. mixer or can connect to your laptop or computer).Uni-directional. Sensitivity: -29dB±2dB(0dB=1V/Pa at1kHZ). Output impedance: 200Ohm±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≤1.0% at 1kHZ). Boytone BT-68SM Pro Studio Recording Condenser Microphone Metal Shock Mount Aluminum high quality construction Internally Polarized Condenser Cardioid Design Large diaphragm for smooth Natural sound and low noise 48V DC phantom power or computer sound card Uni-directional. Sensitivity: -29dB±2dB(0dB=1V/Pa at1kHZ) Output impedance: 200Ohm±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 1000Ohms Equivalent Noise level: Less than 18dB A (IEC581-5) Max. Input SPL: 126dB(THD≤1.0% at 1kHZ)