Shure WH30XLR Cardioid condenser headset mic with XLR connector. Tailored frequency response enhances vocal range. Flexible gooseneck for optimum microphone placement. Isolation shock mount reduces vibration noise. Cardioid polar pattern provides maximum gain before feedback. Low profile & lightweight design. High sound pressure level capability. Secure snap-on windscreen reduces "p" pops. The RPM420 preamp requires phantom power from any 11 - 52 V source.