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AudioParam: maxValue property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since ⁨January 2020⁩.

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

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
Web Audio API> # dom-audioparam-maxvalue>

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet	WebView Android	WebView on iOS
`maxValue`	52	79	53	39	6	52	53	41	6	6.0	52	6