PR40 Studio Microphone TThe Heil PR 40 microphone boasts the widest frequency range of any dynamic mic in the Heil PR series. It incorporates Heil’s sage-like understanding of phasing plug placement, along with the use of a very large (1″), low mass diaphragm, and custom magnet metals housed in a specially designed microphone body. The PR 40 diaphragm is shock mounted such that it is completely de-coupled from the body. In addition to dual mesh screens, each made with different diameter screen apertures, there is an internal breath blast filter on the diaphragm element itself, providing superb response for the human voice across the entire vocal range, without “popping” noises. It ships with a microphone clip and a padded zipper bag. Features Output Connection: 3 pin XLR Element Type: Dynamic Frequency Response: 28Hz - 18kHz Polar Pattern: Cardioid Rear Rejection @ 180° off axis: -40dB Impedance: 600 ohms balanced Output Level: -53.9 dB @ 1 kHz Weight: 13.5oz. Max SPL: 148dB