Why One Bluetooth Earbud Played 4 dB Louder in Our Test
Nobody files a ticket for a 4 dB difference between two earbuds. People nudge the volume up a notch, push one bud…
Discussions about Wireless Earbuds from Sound Tester listeners, answered and checked by the Sound Test Audio Team.
Research on binaural beats for sleep is mixed, and results vary between people. Keep the volume very low, use a timer and skip earbuds in bed if…
Health bodies suggest staying around 85 dBA or lower for work-length listening. Phone headphone safety warnings are a good guide, and lower is safer…
If one bud is silent, reset both, clean the mesh and charge the case. If the bud still plays nothing, it is a fault and a warranty claim is…
Delta beats, 1 to 4 Hz, are often used for sleep. Keep volume low, use a timer and take the headphones off if they hurt.
If the earbuds say connected but sound plays from the phone, the media audio profile is off. Turn on Media audio for the device and re-pair.
Two sets of headphones need dual audio support in the phone or a transmitter that supports two receivers. Many phones allow it under Bluetooth…
Muffled voice on earbuds is common because Bluetooth uses a narrow call profile. Clean the mic holes, hold the buds in properly and run the Mic Test.
Keep it low, just loud enough to hear, and well below the level for long listening. Around 40 to 50 percent volume is typical.
No bass is often a poor seal. Try other ear tip sizes, press the bud in and run the Bass Test to compare both sides.
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Nobody files a ticket for a 4 dB difference between two earbuds. People nudge the volume up a notch, push one bud…
The front pair plays, the subwoofer maybe hums, and the center and both rear speakers sit there like furniture. You…
The mic test shows a moving level bar, the browser says the microphone works, and a minute into the client call…
Web developers and audio testers who build, test and maintain the Sound Tester tools on real headphones, speakers and microphones.

Audio & Acoustic Performance Lead
Brandon Vance is an Audio Output QA specialist focused on multi-channel soundstage testing, quick verification workflows, and precision distortion mapping. An active contributor to the…
Audio Team · Profile

Frequency Sweep Specialist
Xavier Cruz is the Frequency Sweep Specialist on the Sound Tester Audio Team. Dedicated to testing high and low frequency sweeps, sub-bass limits, and speaker rattling thresholds.
7 answers · Profile

Hearing Test Architect
Diana Chen is the Hearing Test Architect on the Sound Tester Audio Team. Designs precise web-based hearing calibration algorithms and variable tone thresholds.
8 answers · Profile

Headphone Benchmark Lead
Alistair Cross is the Headphone Benchmark Lead on the Sound Tester Audio Team. Expert in transient response tracking, left/right separation, and driver matching for studio monitors.
9 answers · Profile

Binaural Beats Engineer
Imogen Blake is the Binaural Beats Engineer on the Sound Tester Audio Team. Specializes in true spatial 3D audio, phase shifting, and binaural audio wave alignment.
7 answers · Profile

Surround Sound Auditor
Callum Sterling is the Surround Sound Auditor on the Sound Tester Audio Team. Focused on checking 5.1/7.1 spatial positioning accuracy, Dolby Atmos channel mappings, and sound leakage.
15 answers · Profile

Tone Generator Validator
Gemma Gallagher is the Tone Generator Validator on the Sound Tester Audio Team. Specializes in raw sine, square, and sawtooth tone generator checks and signal integrity debugging.
4 answers · Profile

Spectrum Analyzer Lead
Harvey Finch is the Spectrum Analyzer Lead on the Sound Tester Audio Team. Audits real-time fast Fourier transform (FFT) spectrum mapping and audio visualizer rendering accuracy.
10 answers · Profile
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