Pyle Amplifier Part, Black (PMIKC20BK) Element: Electret Condenser - Polar Pattern: Cardioid - Frequency Response: 30Hz-18kHz Sensitivity: -41dB  1dB (0dB = 1V/Pa @ 1kHz) - Signal-to-Noise Ratio: 66 dB Max SPL levels: 120dB SPL - Output Impedance: 350O ( 30%) On/Off Switch, 8ft Cable with 3.5mm Jack - Weight: 146g - Dimension: 2"" x 7.5"" Note: Requires External Power Source from PA Amplifier Element: Electret Condenser - Polar Pattern: Cardioid - Frequency Response: 30Hz-18kHz ^Sensitivity: -41dB +/- 1dB (0dB = 1V/Pa @ 1kHz) - Signal-to-Noise Ratio: 66 dB ^Max SPL levels: 120dB SPL - Output Impedance: 350O (+/- 30%) ^On/Off Switch, 8ft Cable with 3.5mm Jack - Weight: 146g - Dimension: 2" x 7.5" ^Note: Requires External Power Source from PA Amplifier