Lewitt Reference-Class Tube Condenser Microphone (LCT-840) Premium externally polarized dual-diaphragm tube microphone with superior dynamic range and low self-noise Ultra-thin 1-inch externally biased, gold-layered low-mass diaphragms combined with a dual triode tube ensures accurate transient response while providing smooth, warm and airy tube sound 5 directional characteristics for maximum flexibility in a wide variety of recording applications 3-position switchable pre-attenuation pad (0 dB, 10 dB, and 20 dB) for handling extremely high sound pressure levels and 3-position high-pass filter Illuminated user interface and jog dials for easy handling even in dark environments