Within the X1 series lays the sE Electroinic's version of a classic ribbion microphone. The X1-R passive ribbion microphone is extremly verstile and can be used in a variety of situations. Even thoough this microphone does not offer full ferquency response performace as the other microphones in this series, the developed ribbion microphone technology is what allows this microphone to have its versitility and tone. The Neodynamic mangnets inside this ribbion miucrophone is what helps gives this microphone its smooth vintage tone. Versitle Use: Most ribbion muicrophoones are too sensite to use on just anything. They have to be delicilty placed and thought out on placement before you can apply them to your recording. Not the X1-R. This microphones can be used on anything from  guitar cabnets to drum overhead. It has an SPL rating of 135 dB which runs a lot higher then the average vintage ribbion microphone, which gives it the ability to be so versitle. Ribbion Mic Magnet Tech: With the X1-R ribbion microphone sE Electroincs had combined there modern desgin on the robbion microphones with top rated Neodynamic magnets to give you that vintage, smooth tone that ever recording engieer loves. Even though it may not have the best frequency response, this microphones still offers you the most for your buck. Features: Passive Generating Element: Hand-tensioned 2.5??m aluminum ribbon Directional Pattern: Figure-8 Frequency range: 20 Hz - 16 kHz Impedance: 200 Ohms Sensitivity: 1.78 mV/Pa (-55 dB) Max SPL: 135 dB (0.5% THD @ 1kHz) Signal to Noise Ratio: 71 dB Self Noise: 23 dB(A) Matching Connectors: XLR3F Power requirement: N/A (phantom-protected