The Electro-Voice RE90B is a professional full-range boundary condenser microphone designed for surface-mounted applications such as boardrooms, classrooms, video conferencing, teleconferencing, and houses of worship. Its half-cardioid pickup pattern provides excellent gain before feedback while helping suppress unwanted ambient noise. Featuring built-in equalization for a natural, balanced frequency response, advanced RF/GSM shielding, and an integrated pop filter, it delivers clear and intelligible speech reproduction. The ultra-low-profile housing features a durable die-cast zinc body, perforated steel grille, and non-slip shock-isolating pad to minimize unwanted surface vibrations. It operates on 9–52 V DC phantom power and includes a 10-foot shielded cable with a 3-pin male XLR connector.