SM7dB

Shure SM7dB XLR Dynamic Microphone with Built‑In Preamp

The Shure SM7dB is an enhanced version of the iconic SM7B, maintaining its legendary sound and rugged build while adding a built-in, switchable preamp. This onboard gain stage delivers up to +28 dB of clean boost, eliminating the need for external boosters like a Cloudlifter or FetHead.

Key Features

• Integrated Preamplifier: Provides +18 dB or +28 dB of clean, transparent gain—ideal for low-output dynamic microphones. Can be bypassed for original SM7B performance.

• Bass Roll-Off & Presence Boost: Rear EQ switches allow you to tailor low-end and midrange response based on voice and recording needs.

• Superior Isolation: Internal air suspension shock mount reduces mechanical noise, while electromagnetic shielding blocks electrical interference.

• Effective Pop Filtering: Includes both standard and close-talk windscreens to handle plosives and breath noise without the need for an external pop filter.

• Cardioid Pickup Pattern: Focuses on the source in front of the mic, rejecting ambient room sound and off-axis noise for cleaner vocal tracks.

Specifications

• Microphone Type: Active dynamic, cardioid

• Frequency Response: 50 Hz – 20 kHz

• Sensitivity:

  • Bypass: −59 dBV/Pa

  • +18 dB: −41 dBV/Pa

  • +28 dB: −31 dBV/Pa

• Output Impedance:

  • 150 ohms (bypass mode)

  • 27 ohms (with preamp active)

• Connector: XLR (3-pin)

• Phantom Power Requirement: 48V (only needed when preamp is engaged)

• Weight: Approx. 837 g (1.875 lb)

• Dimensions: Approx. 149.9 × 96.5 × 198.1 mm

• Included Accessories:

  • Close-talk windscreen

  • Standard foam windscreen

  • Integrated yoke mount

  • Thread adapter

  • Cable tie

  • User guide

  • 2-year limited warranty

Why Choose the SM7dB

• Simplifies Your Setup: Built-in gain removes the need for additional hardware like inline preamps.

• Broadcast-Quality Sound: Retains the trusted tonal profile and dynamic performance of the SM7B.

• Flexible EQ: Onboard contour switches allow for tone shaping without external processors.

• Noise Isolation: Performs exceptionally well in untreated rooms or live environments.

Considerations

• Requires Phantom Power (for preamp): If using the onboard preamp, make sure your interface provides 48V phantom power.

• May Still Need Gain Staging: While onboard gain helps, your interface still matters—poor-quality preamps may introduce noise.

• Subtle Tonal Differences: Some users find the SM7dB slightly different in tone from the original SM7B, especially when the preamp is active.

Summary

The Shure SM7dB is the next evolution of one of the most beloved microphones in the audio industry. With built-in gain and classic SM7B sound, it’s a smart choice for podcasters, streamers, vocalists, and broadcasters who want professional performance with less gear. It's especially useful for those working in setups where external gain-boosting devices are impractical or undesired.

Let me know if you’d like help pairing the SM7dB with an audio interface, boom arm, or recording software.