Shure SM7B

Dynamic cardioid microphone — the broadcast and vocal studio standard.

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The SM7B is one of those microphones that needs no introduction — and that's precisely the problem. It's so ubiquitous that its actual character gets lost behind the reputation.

Here's what you need to know.

Specs

Specifications

TypeDynamic

Polar PatternCardioid

Frequency Response50 Hz – 20 kHz

Sensitivity−59 dBV/Pa

Impedance150 Ω

Weight765.4 g

ConnectorXLR

Phantom PowerNot required

Sonic Character

The SM7B is warm without being muddy, present without being harsh, and forgiving of imperfect rooms. It has a gentle presence peak around 5–6 kHz — enough to cut through a mix without becoming fatiguing. The switchable low-cut (approximately 100 Hz) is useful in untreated spaces where low-frequency buildup is a problem.

It is not a detail monster. It won't reveal the texture of a piano or the room of a violin the way a good condenser will. What it does exceptionally well is vocals — spoken and sung — and particularly in less-than-ideal acoustic environments.

Gain Requirements

This is the most common sticking point. The SM7B is a dynamic microphone with a low output level (−59 dBV/Pa). Budget interfaces often top out at 50–55 dB of gain, which puts you right at the noise floor.

You need at least 60 dB of clean gain. If your interface can't provide it, a clean gain booster like the Cloudlifter CL-1 adds 25 dB of transparent gain before the signal reaches your interface.

Calculate your gain chain →

Placement

Start with the capsule at mouth height, 15–20 cm from the source. The cardioid pattern provides solid off-axis rejection — if your room is bad, move closer (with the low-cut switched on) rather than treating the room.

For broadcast and voiceover, side-address placement with a pop filter between mouth and capsule is standard. The yoke mount included with the mic handles most desktop boom arms without modification.

Audio Examples

Recorded through a Neve 1073 preamp, 24-bit/96 kHz. No processing on the dry signal.

Playing: Dry signal

What It's Not

If you want airy top-end shimmer or the hyper-clarity of a large-diaphragm condenser, look at the Neumann U87 or Rode NT1. The SM7B's smoothed-out top end is an asset for most vocals and a liability for instruments that live above 10 kHz.

It's also not ideal for quiet sources without a good preamp. A breathy vocalist or acoustic guitar will expose the noise floor quickly on a budget interface.