If you’ve heard a podcast in the last ten years, there’s a very good chance you were listening to an SM7B. Joe Rogan uses one. Marc Maron uses one. Michael Jackson sang “Thriller” into one. It’s probably the most famous microphone on the internet right now.
The SM7B is a dynamic microphone, which means it doesn’t need batteries or phantom power to make sound — it works off the energy in your voice itself. That makes it tough, quiet, and forgiving of rooms that aren’t treated for sound.
It has a built-in pop filter (the foam on the front), an internal shock mount (the capsule floats inside the body), and switches on the back that let you roll off bass or add a presence boost. It’s heavy. It’s a real chunk of metal.
The sound is what people call “warm and dark.” It rolls off some of the high frequencies that can make voices sound thin or harsh. That’s why it flatters voices that other mics make sound too sharp.
The SM7B has a quiet output. Very quiet. Most affordable audio interfaces don’t have enough clean gain to push it loud enough on their own. If you plug an SM7B straight into a Focusrite Scarlett 2i2 and turn it up, you’ll hear hiss as loud as your voice.
The fix is an in-line preamp booster. The most famous one is the Cloudlifter CL-1, which adds about 25dB of clean, quiet gain. The Cloudlifter sits on the cable between your mic and your interface, runs off phantom power, and turns the SM7B into a normal-volume mic.
Or, you can use Shure’s own SM7dB, which has the booster built in. Same mic, no separate gear needed.