diff --git a/plugins/channel/udpsrc/udpsrc.cpp b/plugins/channel/udpsrc/udpsrc.cpp
index b780c2ca6..516881633 100644
--- a/plugins/channel/udpsrc/udpsrc.cpp
+++ b/plugins/channel/udpsrc/udpsrc.cpp
@@ -31,6 +31,7 @@ UDPSrc::UDPSrc(MessageQueue* uiMessageQueue, UDPSrcGUI* udpSrcGUI, SampleSink* s
 	m_settingsMutex(QMutex::Recursive),
 	m_audioFifo(4, 24000),
 	m_audioActive(false),
+	m_audioStereo(false),
 	m_volume(20)
 {
 	setObjectName("UDPSrc");
@@ -382,24 +383,49 @@ void UDPSrc::audioReadyRead()
 
 		if (m_audioActive)
 		{
-			for (int i = 0; i < buffer.size() - 3; i += 4)
+			if (m_audioStereo)
 			{
-				qint16 l_sample = (qint16) *(&buffer.data()[i]);
-				qint16 r_sample = (qint16) *(&buffer.data()[i+2]);
-				m_audioBuffer[m_audioBufferFill].l  = l_sample * 10 * m_volume;
-				m_audioBuffer[m_audioBufferFill].r  = r_sample * 10 * m_volume;
-				++m_audioBufferFill;
-
-				if (m_audioBufferFill >= m_audioBuffer.size())
+				for (int i = 0; i < buffer.size() - 3; i += 4)
 				{
-					uint res = m_audioFifo.write((const quint8*)&m_audioBuffer[0], m_audioBufferFill, 1);
+					qint16 l_sample = (qint16) *(&buffer.data()[i]);
+					qint16 r_sample = (qint16) *(&buffer.data()[i+2]);
+					m_audioBuffer[m_audioBufferFill].l  = l_sample * 10 * m_volume;
+					m_audioBuffer[m_audioBufferFill].r  = r_sample * 10 * m_volume;
+					++m_audioBufferFill;
 
-					if (res != m_audioBufferFill)
+					if (m_audioBufferFill >= m_audioBuffer.size())
 					{
-						qDebug("UDPSrc::audioReadyRead: lost %u samples", m_audioBufferFill - res);
-					}
+						uint res = m_audioFifo.write((const quint8*)&m_audioBuffer[0], m_audioBufferFill, 1);
 
-					m_audioBufferFill = 0;
+						if (res != m_audioBufferFill)
+						{
+							qDebug("UDPSrc::audioReadyRead: (stereo) lost %u samples", m_audioBufferFill - res);
+						}
+
+						m_audioBufferFill = 0;
+					}
+				}
+			}
+			else
+			{
+				for (int i = 0; i < buffer.size() - 1; i += 2)
+				{
+					qint16 sample = (qint16) *(&buffer.data()[i]);
+					m_audioBuffer[m_audioBufferFill].l  = sample * 10 * m_volume;
+					m_audioBuffer[m_audioBufferFill].r  = sample * 10 * m_volume;
+					++m_audioBufferFill;
+
+					if (m_audioBufferFill >= m_audioBuffer.size())
+					{
+						uint res = m_audioFifo.write((const quint8*)&m_audioBuffer[0], m_audioBufferFill, 1);
+
+						if (res != m_audioBufferFill)
+						{
+							qDebug("UDPSrc::audioReadyRead: (mono) lost %u samples", m_audioBufferFill - res);
+						}
+
+						m_audioBufferFill = 0;
+					}
 				}
 			}
 
diff --git a/plugins/channel/udpsrc/udpsrc.h b/plugins/channel/udpsrc/udpsrc.h
index c8c4b0c54..874288f45 100644
--- a/plugins/channel/udpsrc/udpsrc.h
+++ b/plugins/channel/udpsrc/udpsrc.h
@@ -181,6 +181,7 @@ protected:
 	quint16 m_audioPort;
 	int m_boost;
 	bool m_audioActive;
+	bool m_audioStereo;
 	int m_volume;
 	Real m_magsq;
 
diff --git a/plugins/channel/udpsrc/udpsrcgui.cpp b/plugins/channel/udpsrc/udpsrcgui.cpp
index 568e646f5..c69fa25f7 100644
--- a/plugins/channel/udpsrc/udpsrcgui.cpp
+++ b/plugins/channel/udpsrc/udpsrcgui.cpp
@@ -402,7 +402,7 @@ void UDPSrcGUI::on_applyBtn_clicked()
 	applySettings();
 }
 
-void UDPSrcGUI::on_audioActive_toggled(bool checked)
+void UDPSrcGUI::on_audioActive_toggled(bool active)
 {
 	ui->applyBtn->setEnabled(true);
 }
diff --git a/plugins/channel/udpsrc/udpsrcgui.h b/plugins/channel/udpsrc/udpsrcgui.h
index 0fae6df23..8971de9e2 100644
--- a/plugins/channel/udpsrc/udpsrcgui.h
+++ b/plugins/channel/udpsrc/udpsrcgui.h
@@ -47,7 +47,7 @@ private slots:
 	void on_udpAddress_textEdited(const QString& arg1);
 	void on_udpPort_textEdited(const QString& arg1);
 	void on_audioPort_textEdited(const QString& arg1);
-	void on_audioActive_toggled(bool checked);
+	void on_audioActive_toggled(bool active);
 	void on_applyBtn_clicked();
 	void onWidgetRolled(QWidget* widget, bool rollDown);
 	void onMenuDoubleClicked();
diff --git a/plugins/channel/udpsrc/udpsrcgui.ui b/plugins/channel/udpsrc/udpsrcgui.ui
index 9be79fa62..57e1d3f7b 100644
--- a/plugins/channel/udpsrc/udpsrcgui.ui
+++ b/plugins/channel/udpsrc/udpsrcgui.ui
@@ -167,6 +167,9 @@
      <layout class="QHBoxLayout" name="DeltaFrequencyLayout">
       <item>
        <widget class="QToolButton" name="deltaMinus">
+        <property name="toolTip">
+         <string>Frequency shift direction</string>
+        </property>
         <property name="text">
          <string>...</string>
         </property>
@@ -323,16 +326,6 @@
         </property>
        </widget>
       </item>
-      <item>
-       <widget class="QCheckBox" name="audioActive">
-        <property name="toolTip">
-         <string>Activate audio</string>
-        </property>
-        <property name="text">
-         <string/>
-        </property>
-       </widget>
-      </item>
       <item>
        <widget class="QLineEdit" name="audioPort">
         <property name="toolTip">
@@ -343,6 +336,24 @@
         </property>
        </widget>
       </item>
+      <item>
+       <widget class="QToolButton" name="audioActive">
+        <property name="toolTip">
+         <string>Toggle audio input</string>
+        </property>
+        <property name="text">
+         <string>...</string>
+        </property>
+        <property name="icon">
+         <iconset resource="../../../sdrbase/resources/res.qrc">
+          <normaloff>:/sound_off.png</normaloff>
+          <normalon>:/sound_on.png</normalon>:/sound_off.png</iconset>
+        </property>
+        <property name="checkable">
+         <bool>true</bool>
+        </property>
+       </widget>
+      </item>
      </layout>
     </item>
     <item row="5" column="1">
diff --git a/sdrbase/resources/mono.png b/sdrbase/resources/mono.png
new file mode 100644
index 000000000..d99257e7b
Binary files /dev/null and b/sdrbase/resources/mono.png differ
diff --git a/sdrbase/resources/res.qrc b/sdrbase/resources/res.qrc
index ca493175f..332524034 100644
--- a/sdrbase/resources/res.qrc
+++ b/sdrbase/resources/res.qrc
@@ -37,5 +37,9 @@
         <file>mem.png</file>
         <file>minusw.png</file>
         <file>plusw.png</file>
+        <file>mono.png</file>
+        <file>stereo.png</file>
+        <file>sound_off.png</file>
+        <file>sound_on.png</file>
     </qresource>
 </RCC>
diff --git a/sdrbase/resources/sound_off.png b/sdrbase/resources/sound_off.png
new file mode 100644
index 000000000..bee07d8fe
Binary files /dev/null and b/sdrbase/resources/sound_off.png differ
diff --git a/sdrbase/resources/sound_on.png b/sdrbase/resources/sound_on.png
new file mode 100644
index 000000000..9d0ccec26
Binary files /dev/null and b/sdrbase/resources/sound_on.png differ
diff --git a/sdrbase/resources/stereo.png b/sdrbase/resources/stereo.png
new file mode 100644
index 000000000..77a319ec5
Binary files /dev/null and b/sdrbase/resources/stereo.png differ