--- a/mobile/android/app/mobile.js
+++ b/mobile/android/app/mobile.js
@@ -794,19 +794,16 @@ pref("dom.payment.provider.0.type", "moz
 pref("dom.payment.provider.0.requestMethod", "GET");
 
 // Shortnumber matching needed for e.g. Brazil:
 // 01187654321 can be found with 87654321
 pref("dom.phonenumber.substringmatching.BR", 8);
 pref("dom.phonenumber.substringmatching.CO", 10);
 pref("dom.phonenumber.substringmatching.VE", 7);
 
-// Support for the mozAudioChannel attribute on media elements is disabled in non-webapps
-pref("media.useAudioChannelService", false);
-
 // Enable hardware-accelerated Skia canvas
 pref("gfx.canvas.azure.backends", "skia");
 pref("gfx.canvas.azure.accelerated", true);
 
 // See ua-update.json.in for the packaged UA override list
 pref("general.useragent.updates.enabled", true);
 pref("general.useragent.updates.url", "https://dynamicua.cdn.mozilla.net/0/%APP_ID%");
 pref("general.useragent.updates.interval", 604800); // 1 week

--- a/modules/libpref/init/all.js
+++ b/modules/libpref/init/all.js
@@ -4986,8 +4986,13 @@ pref("dom.compositionevent.allow_control
 // Bug 1154053: Serialize B2G memory reports; smaller devices are
 // usually overcommitted on memory by using zRAM, so memory reporting
 // causes memory pressure from uncompressing cold heap memory.
 pref("memory.report_concurrency", 1);
 #else
 // Desktop probably doesn't have swapped-out children like that.
 pref("memory.report_concurrency", 10);
 #endif
+
+// Make <audio>, <video>, NPAPI plugins and webAudio talk to the AudioChannelService.
+pref("media.useAudioChannelService", true);
+// Add Mozilla AudioChannel APIs.
+pref("media.useAudioChannelAPI", false);