Choosing a Dynamic Microphone for Streaming

Dynamic microphones are a popular choice for streamers who work in ordinary rooms rather than treated studios. They are generally less sensitive than condenser microphones and are designed to be used close to the mouth, so they tend to capture your voice more strongly than the room around you. This guide covers what to look for when buying one, how to set it up in your streaming software, and how to confirm it sounds right before you go live.

Before you start

Choosing and setting up a microphone happens entirely on your own equipment: the microphone, a cable, possibly an audio interface, your computer and your streaming or call application. No online service is needed for the microphone to work. Some USB microphones offer optional companion software; before installing it, check what it does, whether it needs an account and what data it collects.

• Know how you will connect: directly to a USB port, or through an audio interface or mixer with an XLR input.
• If you plan to use XLR, find the specifications for your interface's preamp gain. Dynamic microphones usually need more gain than condensers.
• Decide how you will mount the microphone: desk stand, boom arm or shock mount. Check that the thread size and weight suit the mount you have.
• Note the main sources of background noise in your room, such as computer fans, a mechanical keyboard, air conditioning or street noise.
• Know where your streaming software lets you choose the input device, and write down your current audio settings so you can return to them.

Step-by-step instructions

1. Pick the connection type

A USB dynamic microphone has its own converter built in and plugs straight into the computer, which makes it the simplest option. An XLR model requires an audio interface or mixer, but gives you more control and an easier upgrade path later. Some microphones offer both outputs, so you can start with USB and move to an interface without replacing the mic. Confirm in the product specifications which outputs a given model actually has.

2. Choose a pickup pattern

Most streaming dynamics use a cardioid pattern, which picks up mainly from the front and rejects sound from the rear. Supercardioid and hypercardioid patterns are narrower at the sides but have a small pickup area directly behind the microphone. The right choice depends on where your noise sources are: you want the least sensitive part of the pattern pointed at your keyboard, speakers or window. Check the polar pattern published by the manufacturer.

3. Check end-address or side-address design

An end-address microphone is spoken into from the top; a side-address microphone is spoken into from the side. Speaking into the wrong part is a common reason a new mic sounds thin and distant. Confirm the design from the manual before positioning it, especially on a boom arm.

4. Match gain needs to your interface

Manufacturers usually publish a sensitivity figure for the microphone. Lower sensitivity means you need more preamp gain to reach a usable input level. Compare that figure with the maximum gain listed for your interface. If the interface looks marginal, an inline microphone booster is an option; most of these draw phantom power from the interface, so check that your interface provides it. Rely on the published specifications for both devices rather than assumptions.

5. Decide which extra features you need

Common features include a built-in windscreen or pop filter, an internal shock mount, an on-mic mute button, tone switches such as bass roll-off or presence boost, and a headphone output for monitoring on USB models. Only pay extra for features you will use on stream.

6. Connect and select the microphone

Plug in the microphone or interface, then select it as the input device in your operating system's sound settings and in your streaming or call application. Set your headphones as the output device so you can monitor without the microphone picking up your speakers. Keep the sample rate consistent across the operating system, interface and software; 48 kHz is a common choice for video. Mismatched rates can cause crackling, pitch problems or drift between audio and video.

7. Set position and input level

Dynamic microphones are meant for close use, so start close and adjust from there. Moving closer adds bass through the proximity effect; moving back makes the voice thinner and lets more of the room in. Raise gain on the interface or USB microphone first, and avoid relying on large digital boosts in software. Set the level so your loudest speech, including laughing or shouting, stays clearly below the top of the meter.

Check the output

Make a short local recording in your streaming software instead of testing live. Speak at your normal volume, then louder, type for a few seconds and stay silent for a moment. Listen back on headphones and check the following.

• Level: the meter never reaches its maximum, and your voice is not buried under game audio or music.
• Background noise: in the silent section, listen for hiss, fan hum or keyboard sounds.
• Tone: a boomy voice suggests you are too close; a thin or distant voice suggests you are too far or speaking off-axis.
• Plosives: popping on P and B sounds can be reduced with a windscreen or by angling the microphone slightly.
• Sync: if you also use a camera, check that speech matches lip movement.

A dynamic microphone reduces room noise and echo but does not remove them. What viewers hear also depends on your stream's audio encoding settings, so review a recording or replay from the platform after your first broadcast. Delete test recordings you no longer need, as they are saved locally wherever your software stores recordings.

Common problems and next steps

The voice is too quiet even at maximum gain

Your interface probably does not provide enough gain for this microphone. Move closer first, then consider an inline booster or an interface with more preamp gain. Adding a lot of digital gain afterwards raises the noise along with your voice.

Hiss or hum in the recording

Steady hiss usually comes from gain pushed near its limit. Hum often points to a cable or grounding issue: try a different cable, a different USB port, or plugging the computer and interface into the same power outlet.

The microphone does not appear in the app

Check the cable and port, then confirm your operating system's privacy settings allow the application to access the microphone. With an XLR setup, the interface is the device you select, so also make sure you have chosen the input channel the microphone is plugged into.

Keyboard or room noise is still audible

Reposition the microphone so the least sensitive part of its pattern faces the noise, move it closer to your mouth and lower the gain. As a next step, try a noise suppression or noise gate filter in your streaming software, and adjust it carefully so it does not cut off the beginnings and ends of words.

Dynamic or condenser?

If your room is quiet and acoustically treated, a condenser can capture more detail. For untreated rooms with fans, keyboards or household noise, a dynamic microphone is usually the more forgiving choice for streaming.