SM7B OR SM7DB? One has a preamp. Both have that legendary sound. Find out which one is right for you.     SM7DB ABOUT  An audio icon is reborn – the Shure SM7dB has the sound you’ve loved for years, but with the convenience of a built-in preamp providing all the extra gain you’ll ever need. The latest iteration of this legendary XLR dynamic microphone makes it easier for podcasters, streamers and musicians to get perfect vocals from any recording setup.     Built-in Preamp   check Transducer: Dynamic     Connection: XLR     Mic Stand & Boom Arm Compatible     EQ Switches     Color: Black     Sensitivity: -59dB, -41dB, -31dB