Quick listening tests for channels, phase, balance, and sweep range.
Audio Test is a lightweight toolkit for checking new headphones, troubleshooting channel issues, and understanding how your setup behaves before you commit to a purchase or a recording session.
Interactive tools built with the Web Audio API.
Guides on buying, tuning, and troubleshooting headphones.
Latest update focused on latency measurement and mobile polish.
Most-used tests
Left and Right Channel
Confirm that each ear cup plays on the correct side and that both drivers respond cleanly.
Frequency Generator
Move through sub-bass, vocal range, and treble with a log-scaled control and live visualizer.
Stereo Image Test
Check whether the stage feels centered, narrow, wide, or smoothly moving.
Phase Check
Compare in-phase and out-of-phase references to spot wiring or processing mistakes.
Balance Test
Shift output between left and right channels until the center image feels stable.
Latency Test
Measure fetch latency to the current host and compare it with your browser audio path.
Short, practical reads
We publish concise guides for buyers, gamers, remote workers, and anyone trying to understand what they are hearing.
How to check headphones before buying
A repeatable five-minute routine for trying headphones in-store or right after delivery.
What the 20 Hz to 20 kHz range really means
Learn why the printed number is only part of the story.
Why one channel can stop working
Common causes, quick diagnostics, and the tests that help you isolate the fault.
Product notes
Your audio stays on your device
Audio Test does not ask you to upload files or create an account. Playback, analysis, and UI updates happen in your browser, which keeps the hosting footprint tiny and the listening flow fast.