Why is your mic so quiet, and how do you make it louder?

Three people in a Discord voice channel, and one of them keeps asking you to repeat yourself. You drag Input Volume all the way right. On Windows you also open the old Sound control panel and push Microphone Boost to +30 dB. Now they can hear you. They can also hear your PC fan, the keyboard, and a faint hiss that was never there before, and when you lean back to laugh you vanish again.

That is the usual arc of "my mic is too quiet", and it explains why the obvious fix disappoints. A quiet mic is rarely one problem. It is a level that starts too low somewhere in the chain, then a pile of sliders that each raise your voice and the room by exactly the same amount. This guide walks the chain in the order the sound travels: the device you picked, the distance to your mouth, the hardware gain, the system slider, the app, and finally the processing that keeps your voice at an even level instead of just a louder one.

If your question is broader than loudness, and you want to know which settings actually change how you sound (tone, noise, echo), the guide on which microphone settings change your sound is the better page. This one stays on volume.

The 30-second diagnosis

Before touching anything, work out which kind of quiet you have. They look the same on a call and have different fixes.

Keep the row that matches in mind. The sections below cover every row, in the order the sound travels.

Why "just turn it up" adds hiss

Every mic picks up two things at once: your voice and everything else in the room. That second part, the fan, the street, the electrical noise of a cheap circuit, sits at some level under your voice. The gap between them is what makes you sound clean or dirty.

An input volume slider, a Microphone Boost checkbox, Discord's Input Volume and OBS's Gain filter all do the same thing: multiply the whole signal. Voice goes up 10 dB, noise goes up 10 dB, and the gap stays exactly where it was. You were quiet with a small gap; now you are loud with the same small gap, and the noise that used to sit below your listener's attention is now loud enough to notice. That is the whole explanation for "mic too quiet even with boost": the boost did its job, it just had nothing clean to amplify.

There is one adjustment that widens the gap instead of preserving it: distance. Sound loses about 6 dB every time the distance from the source doubles, a relationship known as the inverse square law. Move a mic from 60 cm to 15 cm from your mouth and you have halved the distance twice, so your voice arrives roughly 12 dB louder. The fan across the room did not move, so it stays where it was. You gained level and cleanliness in one move, with no slider involved.

The same law explains the leaning-back problem. If you talk from 30 cm and then sit back to 60 cm, you drop about 6 dB mid-sentence. To the people on the call that is a clear step down in volume, and no static slider setting can fix something that changes every time you move.

So the order of fixes matters. Distance and hardware gain first, because they change what the mic captures. Software sliders after, because they can only scale what is already there.

Step 1: make sure the right mic is doing the work

Plenty of "quiet mic" complaints turn out to be the wrong mic. The Mac may have switched to AirPods the moment you put them in. The webcam's mic got picked because it was plugged in last. The display has a microphone and you never knew.

If your Mac microphone is too quiet in every app, start at the system level. Open the Apple menu, System Settings, Sound, and click Input. Apple's guide shows the list of input devices there, the input volume slider and a level meter. Select the mic you think you are using and talk at your normal volume. The meter should move well into the middle of its range on normal speech. If it barely flickers, the problem is upstream of every app, and no Discord setting will fix it.

Then check each app separately. Discord, Zoom, Telegram and OBS all keep their own choice of microphone, and it does not always follow the system default. If you have never opened the Mac's input settings beyond this one slider, the walkthrough of how to change microphone settings on a Mac goes through the rest of them.

A Bluetooth headset is a special case. When its microphone is active, Bluetooth limits how much detail the mic can send, and the voice that arrives is thinner than a wired mic would deliver. If you are on AirPods and quiet, test the built-in mic or a USB mic before chasing settings. The AirPods case is covered in its own guide on why an AirPods mic sounds bad on a Mac.

Step 2: distance and direction, the free 12 dB

Many quiet-mic problems are placement problems wearing a settings costume.

Get closer. For a desk USB mic, 10 to 20 cm from your mouth is a sensible starting range for calls and streams. A boom arm helps more than any setting, because it lets the mic sit close without blocking your screen.

Talk into the right side. Many USB mics are side-address: you speak into the face of the grille, not the top. Blue's own manual for the Yeti X says to speak into the side with the Blue logo, not the top of the mic. Speaking across the top of a side-address mic is one of the most common reasons a decent mic sounds quiet and distant. If you own a Yeti, the Blue Yeti settings guide goes through its knobs and pattern switch.

Check the pickup pattern. Mics with a pattern switch can be set to omni or stereo by accident. For one voice, cardioid is the normal choice, and it is the pattern where facing the mic correctly matters most.

Laptop mic? A MacBook's built-in mics sit in a fixed spot, so the only distance you control is how far you sit from the machine. If you use an external display with the laptop shut or pushed aside, the built-in mic may be a long way from your mouth. The guide on where the MacBook microphone is shows where to aim.

Step 3: hardware gain before software volume

If the mic has a gain knob, or you use an audio interface, that knob is the first volume control, and the right one to raise first. It sets the level at the point where your voice is turned into a signal; software sliders only rescale it afterward.

Dynamic mics are the classic trap. They need a lot of gain. Shure says the SM7B needs a preamp or interface with at least 60 dB of gain, and suggests an inline booster or a stronger preamp if yours does not have more than that. Plug a mic like that into a modest interface, turn the gain all the way up, and it is still quiet. Then every software boost raises the interface's own noise along with your voice. In that situation the fix is hardware: a booster or a different interface, not another plugin. The guide on whether you need an audio interface on a Mac covers the options.

A workable order for any USB mic or interface:

1. App sliders and system input volume: leave at a middle position for now
2. Hardware gain knob: raise while speaking normally, until loud speech
   gets close to the top of the meter without touching red
3. Back off a little: leave room for a laugh or a raised voice
4. System input volume (Mac: System Settings > Sound > Input): adjust
   only if the meter is still low
5. App input volume (Discord, Zoom, OBS): last, small changes only

On a Mac there is no extra boost switch beyond the input volume slider. Whatever the mic and its driver deliver at the top of that slider is the ceiling the system gives you.

Why is my mic so quiet on Discord?

When the system meter looks healthy and you are still quiet on Discord, the cause is almost always inside Discord. Open User Settings (the cog at the bottom left), then Voice & Video. Discord's troubleshooting guide lists the controls that matter. If you want to know how to make your mic louder on Discord without making it noisier, this is the order to work through them.

Input Device. Choose your actual mic, not "Default". Default follows the system and can jump when you connect headphones.

Input Volume. Discord's own slider on top of the system level. Raise it after the system level is right, not instead.

Input sensitivity. With Voice Activity, Discord only transmits when your level crosses a threshold. Discord itself says that if your volume swings between too loud and too soft, or the ends of your sentences get cut off, you should turn off "Automatically determine input sensitivity" and set the slider by hand. A quiet voice that gets chopped at the edges sounds even quieter to listeners than it is.

Noise Suppression. The suppression layer decides what counts as voice. Soft speech, especially from a distance, can get treated as something to remove. Discord's own guide suggests toggling it off to see whether audio improves. If your quiet voice gets swallowed only when suppression is on, the real fix is getting closer to the mic, so suppression has an obvious voice to keep. The guide to Discord noise suppression explains where it helps and where it does not.

Automatic Gain Control. It raises your level when you are soft and lowers it when you are loud. For some setups that fixes a quiet mic; for others it pumps the background up in the pauses. Try the call with it on and off and keep whichever your friends prefer.

Let's Check. Discord's mic test lets you hear yourself through Discord, which is the closest you get to hearing what the channel hears without asking a friend.

One more thing that is not a fix but a workaround: anyone on a server can right-click your name and change your volume on their side. That changes what they hear and nothing else. Good as a stopgap during a session, useless as a solution, because everyone else still hears you quiet.

If Discord makes you sound bad rather than just quiet (robotic, muffled, cutting in and out), why your mic sounds bad on Discord is the page for that.

Zoom and other call apps

Zoom has the same two-way switch as Discord. In Settings, Audio, there is an Input volume slider and an "Automatically adjust microphone volume" option. Zoom's own help says the manual slider is unavailable while auto adjust is on, and suggests disabling auto adjust if your audio fades in and out. If you sound fine for the first minute and then drift quieter, that setting is the first suspect.

In an app with no input slider of its own, the system input level is the only volume control you have, so step 1 and step 3 decide everything there. On a Mac, in apps that support Mic Modes, such as FaceTime, you can click the Video item in the menu bar during a call and choose Mic Mode: Standard, Voice Isolation or Wide Spectrum, with options varying by app. Apple describes Voice Isolation as filtering out background sounds. It is a noise tool, not a volume knob.

Mic too quiet even with boost (Windows)

Windows has a control macOS does not: Microphone Boost. Microsoft's guide puts it in the old Sound control panel, on the Levels tab of the mic's Properties, next to the main Microphone slider. An answer on Microsoft's Q&A forum describes it as adding up to 30 dB on top.

Two things trip people up. First, the slider depends on the driver, and for some devices it is simply not there. Second, when it is there, it is the same kind of multiplier as every other slider: +30 dB on a mic 60 cm away gives you a loud voice with a loud room. If boost makes you audible but hissy, go back to step 2. If you are already close and still quiet with boost, you are probably in the dynamic-mic-on-a-weak-interface situation from step 3.

Keeping the volume even, not just louder

Loud is half the job. The other half is even: the same level when you lean back, when you laugh, when you drop your voice at the end of a sentence. A static slider cannot do that. Two tools can.

A compressor lowers the loud parts so you can raise the whole signal without the peaks clipping. Afterward your soft words sit closer to your loud ones. This is how broadcast voices stay steady.

A limiter is a ceiling. Nothing goes over it, so a sudden laugh does not distort.

Automatic gain controls in Discord and Zoom are a rough version of the same idea, tuned for the average user and the average room. They react to whatever is loudest, which sometimes means your background in the pauses.

If you stream or record with OBS, you can build this chain yourself with filters on the mic source. OBS's own documentation notes that gain should generally be applied at the source before it reaches OBS, with the Gain filter for very quiet sources. A typical starting chain looks like this, with values to tune by ear and by meter:

Mic source filters in OBS, top to bottom
1. Noise Suppression    clean first, so later stages do not lift the noise
2. Gain                 only if still quiet after hardware gain, +3 to +10 dB
3. Compressor           ratio 3:1 to 4:1, threshold around -20 dB,
                        output gain to bring speech back up
4. Limiter              threshold around -3 dB, catches laughs and plosives

The catch: these filters apply to what OBS records and streams. Discord, Zoom and Telegram never see them unless you route OBS's output into a virtual mic. For streaming that is fine. For calls it is a dead end.

Mic amplifier software for Mac and Windows

Maybe you want a mic amplifier program, something that sits between the mic and every app at once. Here is what exists, and what each one actually does to your level.

The Rogue Amoeba route is the most flexible on a Mac, and you build and tune the chain yourself. If you want to compare it in depth, there is a separate guide on whether you need Audio Hijack or Loopback.

Where TunedMic fits, and where it does not

TunedMic is a Mac app that adds one more microphone to the system, called TunedMic. Your real mic stays as it is. TunedMic takes its sound, processes it on the Mac in real time, and any app where you pick TunedMic as the microphone, Discord, Zoom, Telegram, OBS, FaceTime or a browser, hears the processed voice. Switching profile changes the sound in every app at once.

Setup is a Sound Check: you read a short passage aloud for about a minute while TunedMic takes more than 30 measurements of your voice, your mic and your room. The profiles are built from those measurements rather than from a stock preset. If you want to go further, there are optional manual controls for noise, room echo, clarity and loudness, plus a 12-band equalizer. You never have to touch them. With headphones on you can flip between the raw mic and the tuned sound, live, on your own voice. It adds less than a tenth of a second of delay, and your voice is never uploaded.

That makes it a fit for one specific situation: the mic is selected correctly, it is reasonably close, and you are still fighting noise and loudness across several apps, with a different set of sliders in each.

It does not fit when the problem is upstream:

• Wrong device or no permission. Nothing in software helps if the app is listening to the wrong mic or not allowed to listen at all. That is the territory of why a Mac mic is not working.
• Dynamic mic on an underpowered interface. If the hardware cannot raise the signal above its own noise, it needs more hardware gain first.
• Bluetooth. TunedMic works with AirPods, but Bluetooth limits the detail the mic sends, so a wired or USB mic gives it more to work with.
• Windows or an Intel Mac. It needs a Mac with Apple silicon (M1 or newer) and macOS 14 or later. There is no Windows version.

Try it free for 3 days on your quiet mic; after that it is $39 once at the launch price, with no refunds. The home page also has real before and after recordings from three mics, a MacBook's built-in mic, a cheap wired headset and a Hollyland Lark M2, matched in loudness so a louder version cannot win by being louder.

A checklist with numbers

[ ] Correct input selected in System Settings > Sound > Input AND in each app
[ ] Meter on normal speech reaches the middle of its range at the system level
[ ] Mic 10-20 cm from your mouth, facing you (side-address: talk into the logo side)
[ ] Pattern switch on cardioid for one voice
[ ] Hardware gain raised first, peaks just below red
[ ] Discord: automatic input sensitivity off if words get cut; Let's Check run
[ ] Zoom: auto adjust off if you fade during calls; manual slider set once
[ ] Windows: Microphone Boost only after distance is fixed
[ ] Dynamic mic: interface or preamp with enough gain (SM7B: 60 dB or more)
[ ] Leveling: compressor plus limiter in OBS; for calls, auto gain tested on and off

What to do next

Run the first five lines of that checklist before you install anything. Move the mic to a hand's width from your mouth, raise the hardware gain until loud speech nearly fills the meter, and test in Discord with Let's Check or a Zoom test call. If you are now loud and clean, you are done, and it cost nothing.

If you are loud enough but still fighting noise and a separate set of sliders in every app on your Mac, put on headphones and listen to the before and after recordings on the home page, the MacBook mic first. If that difference is the one you need, pricing lists exactly what the $39 covers.