Your mic sounds too quiet. Before you buy a new headset, find out where the problem is. A browser recording can help you test the microphone itself, while your operating system and calling app control what people hear on a live call.
Most call center headsets and budget USB mics have weak preamps. The microphone capsule itself might be decent, but the circuit that amplifies the signal before it reaches your computer is underpowered. The result: Windows or macOS maxes out the mic gain slider at 100%, and the audio is still too quiet.
The other common culprit is Windows reducing your mic volume automatically. Windows has a "Microphone Boost" setting buried in the sound control panel, and a separate "Automatically adjust microphone levels" option that sometimes fights with your manual settings. We'll cover both.
Open the VoxBoost enhancer and use Mic Boost while making a test recording. A Web Audio gain node raises the signal inside that page, so you can hear how extra gain affects your voice, noise floor, and clipping.
It does not sit between your microphone and every other application. Zoom, Teams, softphones, and dialers still receive the device and input level selected in their own settings. For those apps, treat VoxBoost as a test bench and change the live input level in the operating system or call app.
Starting point: Record one sentence at 1.0×, then repeat it at 1.5×. If the second version is clearer without extra hiss or distortion, move up in small steps. If 2.0× still sounds weak, check mic placement and system input level instead of piling on more gain.
This is where most people go wrong. More gain sounds like the answer, but past a certain point, you're not amplifying your voice — you're amplifying the noise floor. Your room noise, your electrical hiss, your keyboard clicks — all of it gets louder at the same rate as your voice.
A rough guide by mic type:
| Mic Type | Safe Boost Range | Notes |
|---|---|---|
| USB headset (budget) | +6 to +12 dB | Pair with noise gate at higher gains |
| USB headset (pro, e.g. Jabra) | +3 to +6 dB | Usually already well-calibrated |
| 3.5mm analog headset | +9 to +15 dB | Higher noise floor — use filters too |
| USB condenser mic | 0 to +6 dB | Usually hot enough; boost may clip |
| Built-in laptop mic | +12 to +18 dB | High noise — always use noise gate |
Clipping happens when the amplified signal exceeds the maximum level your system can handle. It sounds like a harsh, crackly distortion — the opposite of professional. On a call, it makes your voice sound like it's cutting in and out, and it's almost impossible for the other person to ignore.
The quick test: speak at your loudest normal volume (not shouting, just emphatic). If the level meter in VoxBoost AI is hitting the red zone, you need to pull back the gain. Your peaks should be landing around -6 dB to -3 dB. That leaves headroom for natural variations in your speaking volume without clipping.
Practical tip: Set your gain while speaking at the volume you use when you're most excited on a call — not your normal conversational voice. That's your loudest regular output, and you need headroom above it.
Check that the correct device is selected and watch the input meter while you speak. On Windows, open the current Sound settings and inspect the microphone's input level. On macOS, use System Settings → Sound → Input. Menu names can shift between operating-system versions, but the goal is the same: a healthy signal that does not hit the top of the meter.
Do not assume 100% is always correct. If loud words distort, lower the system input. If the meter barely moves with the mic close to your mouth, raise it or check the hardware connection.
Mic boost and noise removal work best together. As you amplify your mic signal, you're also amplifying any background noise that comes through. The fix is to enable noise removal filters alongside the gain boost — specifically the high-pass filter and noise gate.
The noise gate is especially important here. Set it so that the gate closes (mutes your mic) when you pause speaking. This way, the boosted noise floor gets silenced between your sentences, and the listener only hears your amplified voice when you're actually talking.
If you've tried +18 dB of gain and your audio is still too quiet, or if the distortion is showing up even at moderate gain levels, the problem is likely your mic's capsule or a damaged cable. At that point, a $30–$40 replacement USB headset from a reputable brand will give you a cleaner signal to start with than any amount of software processing can fix.
The most common sub-$50 headsets that work well for call center use without needing much gain boost: Jabra Evolve2 30, Poly Blackwire 3210, and Logitech H390. All three have solid built-in preamps and work out of the box without needing any boost.
Use the free mic test to check the raw input, then compare 1.0× and boosted takes in the voice recorder.