Check channels, center image, phase, bass, and range.
Use defined low-level signals to identify routing, balance, polarity, and obvious playback problems without downloading an audio file.
Headphone channel and range bench
Remove headphones first if your current volume is unknown. MeterSee limits its generated level, but the operating system, amplifier, and headphones determine actual sound pressure.
Ready for a controlled listening test
Play one signal at a time and confirm the result after it stops. A signal is never counted as passed merely because its button was clicked.
The Web Audio graph produces defined stereo and frequency signals. MeterSee cannot hear the transducers, measure sound pressure, or certify frequency response. Hearing sensitivity varies; do not increase volume to chase inaudible high or low frequencies.
Treat listening results as functional evidence.
The browser can generate defined signals but cannot measure the acoustic output of physical headphones without calibrated capture hardware.
Verify operating-system balance, reseat the connector, and compare another output device.
Reverse the headphones physically and compare whether the direction follows the hardware or the listener.
Lower volume, reseat the headphones, and compare a second pair. Do not increase volume to chase inaudible frequencies.