Shure SM7dB Dynamic Vocal Microphone

The Shure SM7dB is the “active” version of the legendary SM7B—arguably the most famous vocal microphone in the world. It was released to solve the one major “problem” users had with the original: its extremely low output level.

While the original SM7B requires an expensive audio interface or a “Cloudlifter” to sound good, the SM7dB has that power built directly into the microphone.

The Big Difference: Built-in Preamp

The “dB” in the name stands for the built-in, Shure-designed preamp (using technology licensed from Cloud Microphones). This gives you professional-grade gain without needing extra boxes on your desk.

• Selectable Gain: A switch on the back allows you to add either +18dB or +28dB of clean, transparent boost.

• Bypass Mode: You can turn the preamp off completely. In this mode, it behaves exactly like a traditional SM7B, which is useful if you eventually upgrade to a high-end studio preamp.

• Power Requirement: Unlike the original, you must use 48V Phantom Power from your interface/mixer to use the built-in preamp.

SM7dB vs. Classic SM7B

Technical Specifications

Why Choose the SM7dB?

• For Streamers & Podcasters: If you have a standard interface (like a Focusrite Scarlett Solo or 2i2), the SM7dB ensures your voice is loud and clear without the “hiss” that comes from cranking a cheap interface to its limit.

• The “Michael Jackson” Sound: It uses the exact same capsule as the SM7B used for Thriller, providing that warm, “radio-ready” vocal tone.

• Room Rejection: Like the original, it is incredible at ignoring background noise (fans, keyboards, or traffic), making it perfect for home studios that aren’t soundproofed.

Final Thought: If you already own a Cloudlifter or a high-end interface like a Universal Audio Apollo, stick with the SM7B. If you want a clean, one-cable setup that works with any basic interface, the SM7dB is the better investment.