Built-in Preamp. Built on Legacy.The SM7dB is a dynamic vocal microphone with built-in preamp providing up to +28 dB of low-noise, flat, transparent gain ideal for almost any interface and simplified audio chains.Selectable preamp boost of either +18dB or +28dB of extra gainFlat, wide-range frequency response for exceptionally clean and natural reproduction of both music and speechPreamp bypass switch deactivates the preamp to revert to original SM7B performanceBass roll-off and mid-range emphasis (presence boost) EQ controlsSuperior rejection of electromagnetic hum, optimized for shielding against broadband interference emitted by computer monitorsInternal “air suspension” shock isolation virtually eliminates mechanical noise transmissionHighly effective pop filter eliminates need for any add-on protection against explosive breath sounds, even for close-up vocals or narrationYoke mounting with captive stand nut for easy mounting and dismounting provides precise control of microphone positionClassic cardioid polar pattern, uniform with frequency and symmetrical about axis, to provide maximum rejection and minimum coloration of off-axis soundRugged construction and excellent cartridge protection for outstanding reliability