17 free tools · no sign-up
Online audio tools and audio gear reviews
Test your hearing, calibrate your gear and analyze your room right in the browser. And when it’s time to buy, our honest reviews help you choose well.
- 100% free
- No sign-up
- Nothing is uploaded: it all runs in your browser
Audio lab
Online audio tools
Seventeen tools that run right in your browser: nothing to install, no sign-up, and your files never leave your device.
Hearing test
How high can you hear? Estimate the age of your ears.
Blind ABX test
FLAC or MP3? Find out blind if you can hear the difference.
Do I need an amp?
Calculate the power your headphones really ask for.
Online SPL meter
Measure decibels and your safe noise exposure.
Tone & noise generator
Pure tones, sweeps and white, pink or brown noise.
Spectrum analyzer (RTA)
The sound’s frequencies in real time, with your mic.
Room acoustics
Modes, RT60 and where to place speakers and seat.
Calibrate your turntable
Strobe disc, cartridge alignment and speed check.
Fake lossless detector
Find out if your FLAC is real or an MP3 in disguise.
Album finder
Cover, tracks, year and previews of any album.
Headphone FR comparison
Compare response curves and the Harman target.
Blown speaker? Diagnosis
Guided test: woofer, tweeter, a cable… or nothing.
Eject water from speaker
Slide to the exact ejection tone for your phone.
Real room measurement
Sweep + mic: RT60, resonances, waterfall and EQ.
Subwoofer placement
Your phone measures where the bass works best.
Party-proof your speaker
Find the scenario it reaches clean, no distortion.
PA delay (towers)
Measure the real gap and program the exact ms.
Made for your ears
- Free and sign-up-less, always
- Private: your files never leave your device
- Measurements with honest caveats
In-depth analysis
Latest audio gear reviews
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Onkyo TX-SR3100DAB: Review of an AV Receiver for Home Theater Enjoyment
Here’s an in-depth look at the Onkyo TX-SR3100DAB receiver, a model known for being one of the most well-rounded options…
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Teufel T 10 Review: We Test the Subwoofer That Adds Depth to Your Living Room’s Sound
When we talk about home theater sound, we often think of soundbars or main speakers, but the subwoofer tends to…
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Review: Teufel Theater 500, Three-Way Floorstanding Speakers
Today I have something big in my hands—and not just because of its size. These are the Teufel Theater 500…
To learn
Audio guides & articles
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Your furniture is ruining the sound quality of your soundbar
I spent money on a good soundbar, but it turned out the furniture was the reason for the poor sound quality. I’ll explain what’s…
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TVs with a minimalist design and sound that falls by the wayside
The thinnest TVs on the market compromise audio quality. Teufel explains why this happens and what solutions are available to restore the sound you…