The SM7dB is a cardioid dynamic microphone with a Shure-designed built-in preamp. This preamp provides up to +28 dB of low-noise, flat, transparent gain - ideal for lower-output interfaces and simplified audio chains. Delivers warm and smooth audio for vocal and studio applications. Preamp bypass switch, adjustable bass roll-off and presence boost, electromagnetic hum shielding, internal shock mounting, and external windscreen ensure clear and consistent audio reproduction. Features • Built-in active preamp providing either +18dB or +28dB of extra gain delivers levels suitable for any interface• Flat, wide-range frequency response for exceptionally clean and natural reproduction of both music and speech• Preamp bypass switch to revert to original SM7B performance• Bass roll-off and mid-range emphasis (presence boost) EQ switch controls• Superior rejection of electromagnetic hum, optimized for shielding against broadband interference emitted by computer monitors• Internal "air suspension" shock isolation virtually eliminates mechanical noise transmission• Highly effective pop filter eliminates need for any add-on protection against explosive breath sounds, even for close-up vocals or narration• Yoke mounting with captive stand nut for easy mounting and dismounting provides precise control of microphone position• Classic cardioid polar pattern, uniform with frequency and symmetrical about axis, to provide maximum rejection and minimum coloration of off-axis sound• Rugged construction and excellent cartridge protection for outstanding reliability Specifications Type: Dynamic (moving coil)Polar Pattern: CardioidFrequency Response: 50 Hz to 20 kHzOutput Impendance: 150 Ω in Bypass Mode, 27 Ω in Preamp ModePolarity relative to Pin 3: Positive pressure on diaphragm produces positive voltage on Pin 2Net Weight: 837 g (1.875 lbs)Housing: Black enamel aluminum and steel case with black foam windscreenSensitivity (at 1 kHz, open circuit voltage) [1] 1 Pa=94 dB SPL:• -59 dBV/Pa[1] (1.12 mV) Flat Response Bypass Mode• -41 dBV/Pa[1] (1.12 mV) Flat Response +18 Preamp Mode• -31 dBV/Pa[1] (1.12 mV) Flat Response +28 Preamp Mode
