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The maxchannelCount property of the AudioDestinationNode interface is an unsigned long defining the maximum amount of channels that the physical device can handle.

The AudioNode.channelCount property can be set between 0 and this value (both included). If maxChannelCount is 0, like in OfflineAudioContext, the channel count cannot be changed.


var audioCtx = new AudioContext();
var myDestination = audioCtx.destination;
myDestination.maxChannelCount = 2;


An unsigned long.


The following would set up a simple audio graph, featuring an AudioDestinationNode with maxChannelCount of 2:

var audioCtx = new AudioContext();
var source = audioCtx.createMediaElementSource(myMediaElement);
audioCtx.destination.maxChannelCount = 2;

To see a more complete implementation, check out one of our MDN Web Audio examples, such as Voice-change-o-matic or Violent Theremin.


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

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support14 Yes25 No156
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidIE mobileOpera AndroidiOS Safari
Basic support Yes14 Yes26 No15 ?

See also

Document Tags and Contributors

 Contributors to this page: fscholz, erikadoyle, chrisdavidmills
 Last updated by: fscholz,