The maxValue read-only property of the AudioParam interface represents the maximum possible value for the parameter's nominal (effective) range.


var maxVal = audioParam.maxValue;


A floating-point Number indicating the maximum value permitted for the parameter's nominal range.

The default value of maxValue is the maximum positive single-precision floating-point value (+340,282,346,638,528,859,811,704,183,484,516,925,440).


const audioCtx = new AudioContext();
const gainNode = audioCtx.createGain();
console.log(gainNode.gain.maxValue); // 3.4028234663852886e38


Specification Status Comment
Web Audio API
The definition of 'maxValue' in that specification.
Working Draft  

Browser compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
maxValueChrome Full support 52Edge Full support YesFirefox Full support 53IE No support NoOpera Full support 39Safari Full support 6WebView Android Full support 52Chrome Android Full support 52Edge Mobile Full support YesFirefox Android Full support 53Opera Android Full support 39Safari iOS ? Samsung Internet Android Full support 6.0


Full support  
Full support
No support  
No support
Compatibility unknown  
Compatibility unknown

See also

Document Tags and Contributors

Last updated by: mdnwebdocs-bot,