Twitch Stream Audio Balance: How to Fix Game Audio vs. Mic Volume for a Pro Sound

You can have the cleanest overlays, sharpest camera, and most expensive lighting rig on Twitch — but if your stream audio is off, viewers leave within seconds. Bad audio balance is the fastest way to feel amateur.

The good news? Fixing it costs nothing. Here's the exact game audio vs. mic volume balance that pro streamers use, plus the OBS settings to lock it in.

What "Good Stream Audio" Actually Sounds Like

A professional Twitch stream has three audio qualities:

• Voice is clear and forward — your mic sits slightly above everything else
• Game audio supports, not drowns — viewers can hear footsteps and music without straining
• No sudden volume jumps — alerts, game sounds, and your voice stay in a consistent range

The specific target: your mic should sit around -6 dB to -3 dB on the OBS mixer during normal speaking, and game audio should peak around -12 dB to -10 dB. That roughly 6 dB gap is the sweet spot. It makes your voice the star without muting the game entirely.

The 3-Step Audio Balance Setup (No Expensive Gear Needed)

Step 1: Set Your Base Levels in OBS

Open OBS Studio and look at the Audio Mixer dock. You'll see sources for your Mic/Aux and Desktop Audio (or individual game capture sources).

Desktop Audio (Game): Set this to -12 dB as your starting point. Right-click the volume slider and select "Set to -12 dB" if you want precision. This leaves headroom for loud moments.

Mic/Aux: Speak at your normal streaming volume (not whispering, not yelling). Adjust the mic gain slider so your voice sits between -6 dB and -3 dB on the meter. If you're barely hitting -12 dB, you need more gain. If you're peaking into the red (0 dB), turn it down.

Quick test: Record 30 seconds of gameplay with you talking. Play it back on earbuds or headphones. If you have to strain to hear your voice, game audio is too loud. If you can't hear in-game sound effects, voice is too loud.

Step 2: Add a Compressor to Your Mic (The Pro Trick)

A compressor smooths out your volume so you don't go from whisper to shout. This is the single most impactful free upgrade you can make.

In OBS, right-click your Mic/Aux source → Filters → Add → Compressor.

Use these starting settings (tweak from here):

• Ratio: 4:1
• Threshold: -18 dB
• Attack: 6 ms
• Release: 60 ms
• Output Gain: +3 dB (to compensate for the reduction)

This keeps your voice locked in a tight range so viewers never have to touch their volume knob when you get excited or lean back.

Step 3: Use Audio Ducking for Alerts

Nothing screams "amateur" like a 500 dB raid alert that blows out your viewers' ears while you're mid-sentence.

OBS has a built-in "Sidechain Compression" feature (often called ducking). Here's how to set it up:

1. Add a Compressor filter to your Desktop Audio (game sounds)
2. Under "Sidechain," select your Mic/Aux source
3. Set Ratio to 10:1, Threshold to -30 dB, Attack to 100 ms, Release to 300 ms

Now, whenever you speak, the game audio automatically lowers by about 10 dB. When you stop, it fades back up. No manual volume riding needed.

For alert sounds specifically: If you use StreamElements, Streamlabs, or another alert system, create a dedicated "Alert Audio" source in OBS. Apply a Limiter filter to it with a ceiling of -6 dB. This prevents any alert from ever exceeding that level, no matter how loud the source file is.

Common Audio Balance Mistakes (and Exactly How to Fix Them)

"My viewers say my voice is too quiet during gameplay"

This is the #1 complaint on Twitch. The fix is almost always one of these:

• Your mic gain is too low (target -6 dB speaking level)
• Game audio is too high (lower it to -12 dB or below)
• You're not using a compressor on your mic (add one with the settings above)
• You're too far from your mic (stay within 6-8 inches for most dynamic mics)

"My alerts are way louder than everything else"

Create a dedicated audio source for alerts in OBS. Add a Limiter filter set to -8 dB ceiling. Test the loudest alert you have — if it's still too hot, lower the volume slider on that source directly.

"The audio sounds fine to me, but recordings/vods sound bad"

You're likely hearing your own voice through your headphones (direct monitoring) which creates a false sense of balance. Turn off local monitoring and check your levels purely by looking at the OBS meters. Record a 2-minute test and listen back on phone speakers — that's what your audience hears.

"My music or background sounds overwhelm my voice"

If you play background music, keep it at -18 dB to -20 dB relative to your voice. That's roughly 8-10 dB below your game audio. Music should be felt, not heard. Apply a Low-pass filter at 200 Hz to the music track to carve out space for your voice in the frequency range.

The "One-Number" Rule for Instant Audio Quality

Every streamer should memorize this: Your mic should be 6 dB louder than your game audio.

That's it. If you take nothing else from this guide, set your levels so there's a consistent 6 dB gap between your voice peaks and your game peaks. Everything else — ducking, compression, limiting — is just making that gap sound natural.

How to Test Your Stream Audio Before Going Live

Don't guess. Run this 3-minute pre-stream check:

1. Open OBS and start a recording (not a stream — recordings are free)
2. Speak normally for 30 seconds while doing nothing in-game
3. Play a loud game moment for 30 seconds without speaking
4. Speak over that loud moment for 30 seconds
5. Trigger your loudest alert while speaking
6. Stop the recording and listen back on phone speakers, earbuds, and headphones

If any section makes you wince, adjust and re-test. Do this once and you'll have baseline settings that work for months.

When Audio Balance Alone Isn't Enough

Good audio balance makes your stream listenable. But it's part of a bigger picture — viewers also judge your channel on visual polish within seconds of landing on your page.

If you've dialed in your audio and still feel like something is off, it might be your overlays, panels, or channel layout. For that, we built a tool that reviews your entire Twitch presence and tells you exactly what to fix — audio included.

Get your free Streamlint audit and see what your channel looks like through a viewer's eyes. It catches the mix issues, the branding gaps, and the discoverability problems that hold small streamers back. Free, takes two minutes, and gives you a prioritized fix list.