Special 50th anniversary edition in silver-colored metallic finish with etched-on serial number and carefully crafted wooden carrying case * Transparent uppers/mids balanced by rich low-end qualities combine with advanced acoustic engineering for extensive performance capabilities and highest quality * Dual-diaphragm capsule design maintains precise polar pattern definition across the full frequency range of the microphone * The 2-micron-thick, vapor-deposited gold diaphragms undergo a five-step aging process so that the optimum characteristics achieved remain constant over years of use * Three switchable polar patterns: omni, cardioid, figure-of-eight