sE Electronics X1R Passive Ribbon Microphone Type: Passive Element: 2AfasA,Am aluminum ribbon Frequency Response: 2Hz - 16kHz AfasA,A+/-1dB Sensitivity: -55.3dB 1V/Pa AfasA,A+/-1dB Directional pattern: Figure of 8 Impedance: ?2 ohm Connector: 3-pin XLR Max SPL: 135dB Weight: .5kg