Audio Balance Tester
Test your left and right audio channels independently to check speaker or headphone balance.
¿Qué es Audio Balance Tester?
Audio Balance Tester plays a test tone through your chosen audio channel — left only, right only, or both — so you can quickly verify that your speakers or headphones produce equal volume on each side and that channels are correctly wired.
Cómo usar Audio Balance Tester
- Click 'LEFT only', 'BOTH', or 'RIGHT only' to select which channel(s) to test.
- Use the balance slider for fine-grained panning between -100 (full left) and +100 (full right).
- Choose a test frequency: 250 Hz (bass), 1 kHz (mid), or 4 kHz (treble), or enter a custom value.
- Adjust the volume slider to a comfortable level.
- Click Play and listen — sound should appear to come from the selected direction.
Ejemplos
Headphone wiring check
Entrada: LEFT only, then RIGHT only
Salida: If LEFT plays in your right ear, your headphones are backwards or miswired
Speaker balance
Entrada: BOTH (center), 1 kHz, seated equidistant from speakers
Salida: Sound should appear to come from exactly between the two speakers
Balance calibration
Entrada: Drag slider left and right while playing
Salida: Visual pan indicator moves in sync with perceived stereo position
Errores comunes
- Not checking OS audio balance first — many operating systems have a built-in left/right balance control that, if misconfigured, will override any test result.
- Testing over Bluetooth — Bluetooth audio compression and buffering can introduce slight channel imbalances that don't reflect true hardware performance.
- Using very high test frequencies at full volume — keep volume low when testing above 4 kHz to avoid discomfort.
Por qué usar esta herramienta
- One-click channel isolation makes left/right problems immediately audible.
- Visual stereo field indicator confirms the pan position at a glance.
- Multiple test frequencies help reveal frequency-dependent channel differences.
- Entirely browser-based — no installation, fully private.