01
What this can prove
A successful reference confirms that this browser session can produce audible output through the current path.
Output check
Online audio test
Confirm that sound reaches the selected output path before testing individual components.
Before you begin
Start at a low device volume. No sound starts automatically. Use Stop all audio at any time.
Two-reference check
Output test
Confirm basic output with a fixed tone and a short range reference, then record what happened.
Run one reference at a time. Record what you actually hear before changing the setup.
- 01
Known tone
A short 440 Hz sine tone through both channels.
- 02
Short range check
A controlled sweep from 250 Hz to 4 kHz through both channels.
StatusWeb Audio is unavailable in this browser.
02
What it cannot prove
It does not identify which component caused a failure, measure physical loudness or certify audio quality.
03
Privacy and safety
Signals and analysis stay in your browser by default. Browser dBFS is not physical SPL.
How to use this test
Keep the comparison controlled.
- 01
Keep the path unchanged
Select the output you want to check and leave cables, balance and enhancements as they are.
- 02
Run both references
Play the fixed tone and short range check at the same digital level.
- 03
Record before changing
Mark what you heard, then use that observation as the starting point for diagnosis.