The minValue read-only property of the AudioParam interface represents the minimum possible value for the parameter's nominal (effective) range. 
 The minValue read-only property of the AudioParam interface represents the minimum possible value for the parameter's nominal (effective) range. 
 A floating-point Number indicating the minimum value permitted for the parameter's nominal range. 
 The default value of minValue is the minimum negative single-precision floating-point value (-340,282,346,638,528,859,811,704,183,484,516,925,440). 
js
const audioCtx = new AudioContext(); const gainNode = audioCtx.createGain(); console.log(gainNode.gain.minValue); // -3.4028234663852886e38
| Specification | 
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| Web Audio API  # dom-audioparam-minvalue  | 
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| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
minValue | 
52 | 79 | 53 | No | 39 | 6 | 52 | 52 | 53 | 41 | 6 | 6.0 | 
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    https://developer.mozilla.org/en-US/docs/Web/API/AudioParam/minValue