diff --git a/applet/contents/config/main.xml b/applet/contents/config/main.xml
--- a/applet/contents/config/main.xml
+++ b/applet/contents/config/main.xml
@@ -16,9 +16,15 @@
       <default>true</default>
     </entry>
     <entry name="outputChangeOsd" type="Bool">
-    <label>Whether to show a popup when the default output device changes (e.g. plugging in a headset)</label>
+      <label>Whether to show a popup when the default output device changes (e.g. plugging in a headset)</label>
       <default>true</default>
     </entry>
+    <entry name="globalMute" type="Bool">
+      <default>false</default>
+    </entry>
+    <entry name="globalMuteDevices" type="StringList">
+      <label>Devices that were not muted with global mute, and will remain muted afterwards.</label>
+    </entry>
   </group>
 
 </kcfg>
diff --git a/applet/contents/ui/DeviceListItem.qml b/applet/contents/ui/DeviceListItem.qml
--- a/applet/contents/ui/DeviceListItem.qml
+++ b/applet/contents/ui/DeviceListItem.qml
@@ -24,8 +24,28 @@
 
 ListItemBase {
     readonly property var currentPort: Ports[ActivePortIndex]
+    readonly property var currentActivePortIndex: ActivePortIndex
+    readonly property var currentMuted: Muted
     property bool onlyOne: false
 
     draggable: false
     label: currentPort ? currentPort.description : Description
+
+    onCurrentActivePortIndexChanged: {
+        if (globalMute && !Muted) {
+            Muted = true;
+        }
+    }
+
+    onCurrentMutedChanged: {
+        if (type === "sink") {
+            if (globalMute) {
+                if (!Muted) {
+                    plasmoid.configuration.globalMuteDevices = [];
+                    plasmoid.configuration.globalMute = false;
+                    globalMute = false;
+                }
+            }
+        }
+    }
 }
diff --git a/applet/contents/ui/main.qml b/applet/contents/ui/main.qml
--- a/applet/contents/ui/main.qml
+++ b/applet/contents/ui/main.qml
@@ -35,12 +35,14 @@
     id: main
 
     property bool volumeFeedback: Plasmoid.configuration.volumeFeedback
+    property bool globalMute: Plasmoid.configuration.globalMute
     property int raiseMaxVolumeValue: 150
     property int maxVolumeValue: Math.round(raiseMaxVolumeValue * PulseAudio.NormalVolume / 100.0)
     property int currentMaxVolumeValue: plasmoid.configuration.raiseMaximumVolume ? maxVolumeValue : PulseAudio.NormalVolume
     property int volumeStep: Math.round(Plasmoid.configuration.volumeStep * PulseAudio.NormalVolume / 100.0)
     property string displayName: i18n("Audio Volume")
     property QtObject draggedStream: null
+    property var globalMuteDevices: Plasmoid.configuration.globalMuteDevices
 
     // DEFAULT_SINK_NAME in module-always-sink.c
     readonly property string dummyOutputName: "auto_null"
@@ -121,9 +123,15 @@
             return;
         }
         var toMute = !paSinkModel.preferredSink.muted;
-        paSinkModel.preferredSink.muted = toMute;
-        osd.show(toMute ? 0 : volumePercent(paSinkModel.preferredSink.volume, currentMaxVolumeValue));
-        if (!toMute) {
+        if (toMute) {
+            enableGlobalMute();
+            osd.show(0);
+        } else {
+            if (globalMute) {
+                disableGlobalMute();
+            }
+            paSinkModel.preferredSink.muted = toMute;
+            osd.show(volumePercent(paSinkModel.preferredSink.volume, currentMaxVolumeValue));
             playFeedback();
         }
     }
@@ -169,6 +177,60 @@
         feedback.play(sinkIndex);
     }
 
+    function enableGlobalMute() {
+        var role = paSinkModel.role("Muted");
+        var rowCount = paSinkModel.rowCount();
+        // List for devices that are already muted. Will use to keep muted after disable GlobalMute.
+        var globalMuteDevices = [];
+
+        for (var i = 0; i < rowCount; i++) {
+            var idx = paSinkModel.index(i, 0);
+            var name = paSinkModel.data(idx, paSinkModel.role("Name"));
+            if (paSinkModel.data(idx, role) === false) {
+                paSinkModel.setData(idx, true, role);
+            } else {
+                globalMuteDevices.push(name + "." + paSinkModel.data(idx, paSinkModel.role("ActivePortIndex")));
+            }
+        }
+        // If all the devices were muted, will unmute them all with disable GlobalMute.
+        plasmoid.configuration.globalMuteDevices = globalMuteDevices.length < rowCount ? globalMuteDevices : [];
+
+        if (!globalMute) {
+            plasmoid.configuration.globalMute = true;
+            globalMute = true;
+        }
+    }
+
+    function forceGlobalMute() {
+        var role = paSinkModel.role("Muted");
+        var rowCount = paSinkModel.rowCount();
+        for (var i = 0; i < rowCount; i++) {
+            var idx = paSinkModel.index(i, 0);
+            var name = paSinkModel.data(idx, paSinkModel.role("Name"));
+            if (paSinkModel.data(idx, role) === false) {
+                paSinkModel.setData(idx, true, role);
+            }
+        }
+        if (!globalMute) {
+            plasmoid.configuration.globalMute = true;
+            globalMute = true;
+        }
+    }
+
+    function disableGlobalMute() {
+        var role = paSinkModel.role("Muted");
+        for (var i = 0; i < paSinkModel.rowCount(); i++) {
+            var idx = paSinkModel.index(i, 0);
+            var name = paSinkModel.data(idx, paSinkModel.role("Name")) + "." + paSinkModel.data(idx, paSinkModel.role("ActivePortIndex"));
+            if (plasmoid.configuration.globalMuteDevices.indexOf(name) === -1) {
+                paSinkModel.setData(idx, false, role);
+            }
+        }
+        plasmoid.configuration.globalMuteDevices = [];
+        plasmoid.configuration.globalMute = false;
+        globalMute = false;
+    }
+
     SinkModel {
         id: paSinkModel
 
@@ -203,6 +265,12 @@
             }
             osd.showText(icon, description);
         }
+
+        onRowsInserted: {
+            if (globalMute) {
+                forceGlobalMute();
+            }
+        }
     }
 
     SourceModel {
@@ -563,6 +631,20 @@
                 Layout.fillWidth: true
             }
 
+            PlasmaComponents.ToolButton {
+                id: globalMuteCheckbox
+                iconName: "audio-volume-muted"
+                onClicked: {
+                    if (!globalMute) {
+                        enableGlobalMute();
+                    } else {
+                        disableGlobalMute();
+                    }
+                }
+                checked: globalMute
+                tooltip: i18n("Force mute all playback devices")
+            }
+
             PlasmaComponents.ToolButton {
                 tooltip: plasmoid.action("configure").text
                 iconName: "configure"
@@ -574,7 +656,19 @@
         }
     }
 
+    // Wait for paSinkModel init.
+    Timer {
+        id: forceGlobalMuteTimer
+        interval: 200
+        onTriggered: {
+            if (globalMute) {
+                forceGlobalMute();
+            }
+        }
+    }
+
     Component.onCompleted: {
+        forceGlobalMuteTimer.restart();
         MicrophoneIndicator.init();
     }
 }