diff --git a/src/common/AudioSettings.cxx b/src/common/AudioSettings.cxx
index f1b87a0cc..599b56849 100644
--- a/src/common/AudioSettings.cxx
+++ b/src/common/AudioSettings.cxx
@@ -146,6 +146,13 @@ AudioSettings::ResamplingQuality AudioSettings::resamplingQuality()
   return customSettings() ? normalizeResamplingQuality(mySettings->getInt(SETTING_RESAMPLING_QUALITY)) : myPresetResamplingQuality;
 }
 
+// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+string AudioSettings::stereo() const
+{
+  // 0 is a valid value -> keep it
+  return mySettings->getString(SETTING_STEREO);
+}
+
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 uInt32 AudioSettings::volume() const
 {
@@ -253,6 +260,14 @@ void AudioSettings::setResamplingQuality(AudioSettings::ResamplingQuality resamp
   normalize(*mySettings);
 }
 
+// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+void AudioSettings::setStereo(const string& mode)
+{
+  if(!myIsPersistent) return;
+
+  mySettings->setValue(SETTING_STEREO, mode);
+}
+
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 void AudioSettings::setVolume(uInt32 volume)
 {
diff --git a/src/common/AudioSettings.hxx b/src/common/AudioSettings.hxx
index 4851cd1ae..07640d8ce 100644
--- a/src/common/AudioSettings.hxx
+++ b/src/common/AudioSettings.hxx
@@ -46,6 +46,7 @@ class AudioSettings
     static constexpr const char* SETTING_BUFFER_SIZE         = "audio.buffer_size";
     static constexpr const char* SETTING_HEADROOM            = "audio.headroom";
     static constexpr const char* SETTING_RESAMPLING_QUALITY  = "audio.resampling_quality";
+    static constexpr const char* SETTING_STEREO              = "audio.stereo";
     static constexpr const char* SETTING_VOLUME              = "audio.volume";
     static constexpr const char* SETTING_ENABLED             = "audio.enabled";
 
@@ -55,6 +56,7 @@ class AudioSettings
     static constexpr uInt32 DEFAULT_BUFFER_SIZE                     = 3;
     static constexpr uInt32 DEFAULT_HEADROOM                        = 2;
     static constexpr ResamplingQuality DEFAULT_RESAMPLING_QUALITY   = ResamplingQuality::lanczos_2;
+    static constexpr const char* DEFAULT_STEREO                     = "BYROM";
     static constexpr uInt32 DEFAULT_VOLUME                          = 80;
     static constexpr bool DEFAULT_ENABLED                           = true;
 
@@ -81,6 +83,8 @@ class AudioSettings
 
     ResamplingQuality resamplingQuality();
 
+    string stereo() const;
+
     uInt32 volume() const;
 
     bool enabled() const;
@@ -97,6 +101,8 @@ class AudioSettings
 
     void setResamplingQuality(ResamplingQuality resamplingQuality);
 
+    void setStereo(const string& mode);
+
     void setVolume(uInt32 volume);
 
     void setEnabled(bool isEnabled);
diff --git a/src/emucore/Settings.cxx b/src/emucore/Settings.cxx
index be2cb7ed6..1e38d14fe 100644
--- a/src/emucore/Settings.cxx
+++ b/src/emucore/Settings.cxx
@@ -70,13 +70,14 @@ Settings::Settings(OSystem& osystem)
 
   // Sound options
   setInternal(AudioSettings::SETTING_ENABLED, AudioSettings::DEFAULT_ENABLED);
+  setInternal(AudioSettings::SETTING_VOLUME, AudioSettings::DEFAULT_VOLUME);
+  setInternal(AudioSettings::SETTING_STEREO, AudioSettings::DEFAULT_STEREO);
   setInternal(AudioSettings::SETTING_PRESET, static_cast<int>(AudioSettings::DEFAULT_PRESET));
   setInternal(AudioSettings::SETTING_SAMPLE_RATE, AudioSettings::DEFAULT_SAMPLE_RATE);
   setInternal(AudioSettings::SETTING_FRAGMENT_SIZE, AudioSettings::DEFAULT_FRAGMENT_SIZE);
   setInternal(AudioSettings::SETTING_BUFFER_SIZE, AudioSettings::DEFAULT_BUFFER_SIZE);
   setInternal(AudioSettings::SETTING_HEADROOM, AudioSettings::DEFAULT_HEADROOM);
   setInternal(AudioSettings::SETTING_RESAMPLING_QUALITY, static_cast<int>(AudioSettings::DEFAULT_RESAMPLING_QUALITY));
-  setInternal(AudioSettings::SETTING_VOLUME, AudioSettings::DEFAULT_VOLUME);
 
   // Input event options
   setInternal("keymap", "");
@@ -445,13 +446,15 @@ void Settings::usage() const
     << endl
   #ifdef SOUND_SUPPORT
     << "  -audio.enabled            <1|0>          Enable audio\n"
+    << "  -audio.volume             <number>       Vokume (0 -- 100)\n"
+    << "  -audio.stereo             <byrom|mono|   Enable stereo mode\n"
+    << "                            stereo>\n"
     << "  -audio.preset             <1-5>          Audio preset (or 1 for custom)\n"
     << "  -audio.sample_rate        <number>       Output sample rate (44100|48000|96000)\n"
     << "  -audio.fragment_size      <number>       Fragment size (128|256|512|1024|2048|4096)\n"
     << "  -audio.buffer_size        <number>       Max. number of additional half-frames to buffer (0 -- 20)\n"
     << "  -audio.headroom           <number>       Additional half-frames to prebuffer (0 -- 20)\n"
     << "  -audio.resampling_quality <1-3>          Resampling quality\n"
-    << "  -audio.volume             <number>       Vokume (0 -- 100)\n"
     << endl
   #endif
     << "  -tia.zoom      <zoom>         Use the specified zoom level (windowed mode) for TIA image\n"
diff --git a/src/gui/AudioDialog.cxx b/src/gui/AudioDialog.cxx
index 15611489d..1fcae59df 100644
--- a/src/gui/AudioDialog.cxx
+++ b/src/gui/AudioDialog.cxx
@@ -41,19 +41,20 @@ AudioDialog::AudioDialog(OSystem& osystem, DialogContainer& parent,
   const int VBORDER = 10;
   const int HBORDER = 10;
   const int INDENT = 20;
+  const int VGAP = 4;
   const int lineHeight   = font.getLineHeight(),
             fontWidth    = font.getMaxCharWidth(),
             fontHeight   = font.getFontHeight();
   int xpos, ypos;
-  int lwidth = font.getStringWidth("Resampling quality "),
-    pwidth = font.getStringWidth("512 bytes");
+  int lwidth = font.getStringWidth("Volume "),
+    pwidth;
 
   WidgetArray wid;
   VariantList items;
 
   // Set real dimensions
   _w = 46 * fontWidth + HBORDER * 2;
-  _h = 11 * (lineHeight + 4) + VBORDER + _th;
+  _h = 11 * (lineHeight + VGAP) + VBORDER + _th;
 
   xpos = HBORDER;  ypos = VBORDER + _th;
 
@@ -62,18 +63,31 @@ AudioDialog::AudioDialog(OSystem& osystem, DialogContainer& parent,
   mySoundEnableCheckbox = new CheckboxWidget(this, font, xpos, ypos,
                                              "Enable sound", kSoundEnableChanged);
   wid.push_back(mySoundEnableCheckbox);
-  ypos += lineHeight + 4;
+  ypos += lineHeight + VGAP;
   xpos += INDENT;
 
   // Volume
   myVolumeSlider = new SliderWidget(this, font, xpos, ypos,
-                                    "Volume   ", 0, 0, 4 * fontWidth, "%");
+                                    "Volume", lwidth, 0, 4 * fontWidth, "%");
   myVolumeSlider->setMinValue(1); myVolumeSlider->setMaxValue(100);
   myVolumeSlider->setTickmarkInterval(4);
   wid.push_back(myVolumeSlider);
-  ypos += lineHeight + 4;
+  ypos += lineHeight + VGAP;
 
-  //
+  // Stereo sound
+  VarList::push_back(items, "By ROM", "BYROM");
+  VarList::push_back(items, "Off", "MONO");
+  VarList::push_back(items, "On", "STEREO");
+  pwidth = font.getStringWidth("By ROM");
+
+  myStereoSoundPopup = new PopUpWidget(this, font, xpos, ypos,
+                                       pwidth, lineHeight,
+                                       items, "Stereo", lwidth);
+  wid.push_back(myStereoSoundPopup);
+  ypos += lineHeight + VGAP;
+
+  // Mode
+  items.clear();
   VarList::push_back(items, "Low quality, medium lag", static_cast<int>(AudioSettings::Preset::lowQualityMediumLag));
   VarList::push_back(items, "High quality, medium lag", static_cast<int>(AudioSettings::Preset::highQualityMediumLag));
   VarList::push_back(items, "High quality, low lag", static_cast<int>(AudioSettings::Preset::highQualityLowLag));
@@ -81,12 +95,14 @@ AudioDialog::AudioDialog(OSystem& osystem, DialogContainer& parent,
   VarList::push_back(items, "Custom", static_cast<int>(AudioSettings::Preset::custom));
   myModePopup = new PopUpWidget(this, font, xpos, ypos,
                                    font.getStringWidth("Ultry quality, minimal lag"), lineHeight,
-                                   items, "Mode (*) ", 0, kModeChanged);
+                                   items, "Mode", lwidth, kModeChanged);
   wid.push_back(myModePopup);
-  ypos += lineHeight + 4;
+  ypos += lineHeight + VGAP;
   xpos += INDENT;
 
   // Fragment size
+  pwidth = font.getStringWidth("512 bytes");
+  lwidth = font.getStringWidth("Resampling quality ");
   items.clear();
   VarList::push_back(items, "128 bytes", 128);
   VarList::push_back(items, "256 bytes", 256);
@@ -98,7 +114,7 @@ AudioDialog::AudioDialog(OSystem& osystem, DialogContainer& parent,
                                     pwidth, lineHeight,
                                     items, "Fragment size (*) ", lwidth);
   wid.push_back(myFragsizePopup);
-  ypos += lineHeight + 4;
+  ypos += lineHeight + VGAP;
 
   // Output frequency
   items.clear();
@@ -109,7 +125,7 @@ AudioDialog::AudioDialog(OSystem& osystem, DialogContainer& parent,
                                 pwidth, lineHeight,
                                 items, "Sample rate (*) ", lwidth);
   wid.push_back(myFreqPopup);
-  ypos += lineHeight + 4;
+  ypos += lineHeight + VGAP;
 
   // Resampling quality
   items.clear();
@@ -120,7 +136,7 @@ AudioDialog::AudioDialog(OSystem& osystem, DialogContainer& parent,
                                 pwidth, lineHeight,
                                 items, "Resampling quality ", lwidth);
   wid.push_back(myResamplingPopup);
-  ypos += lineHeight + 4;
+  ypos += lineHeight + VGAP;
 
   // Param 1
   int swidth = pwidth+23;
@@ -128,9 +144,8 @@ AudioDialog::AudioDialog(OSystem& osystem, DialogContainer& parent,
                                       "Headroom           ", 0, kHeadroomChanged, 10 * fontWidth);
   myHeadroomSlider->setMinValue(0); myHeadroomSlider->setMaxValue(AudioSettings::MAX_HEADROOM);
   myHeadroomSlider->setTickmarkInterval(3);
-
   wid.push_back(myHeadroomSlider);
-  ypos += lineHeight + 4;
+  ypos += lineHeight + VGAP;
 
   // Param 2
   myBufferSizeSlider = new SliderWidget(this, font, xpos, ypos, swidth, lineHeight,
@@ -139,11 +154,6 @@ AudioDialog::AudioDialog(OSystem& osystem, DialogContainer& parent,
   myBufferSizeSlider->setTickmarkInterval(3);
   wid.push_back(myBufferSizeSlider);
 
-  // Add message concerning usage
-  ypos = _h - fontHeight * 2 - 24;
-  const GUI::Font& infofont = instance().frameBuffer().infoFont();
-  new StaticTextWidget(this, infofont, HBORDER, ypos, "(*) Requires application restart");
-
   // Add Defaults, OK and Cancel buttons
   addDefaultsOKCancelBGroup(wid, font);
 
@@ -155,11 +165,14 @@ void AudioDialog::loadConfig()
 {
   AudioSettings& audioSettings = instance().audioSettings();
 
+  // Enable sound
+  mySoundEnableCheckbox->setState(audioSettings.enabled());
+
   // Volume
   myVolumeSlider->setValue(audioSettings.volume());
 
-  // Enable sound
-  mySoundEnableCheckbox->setState(audioSettings.enabled());
+  // Stereo
+  myStereoSoundPopup->setSelected(audioSettings.stereo());
 
   // Preset / mode
   myModePopup->setSelected(static_cast<int>(audioSettings.preset()));
@@ -193,12 +206,17 @@ void AudioDialog::saveConfig()
 {
   AudioSettings& audioSettings = instance().audioSettings();
 
+  // Enabled
+  audioSettings.setEnabled(mySoundEnableCheckbox->getState());
+  instance().sound().setEnabled(mySoundEnableCheckbox->getState());
+
   // Volume
   audioSettings.setVolume(myVolumeSlider->getValue());
   instance().sound().setVolume(myVolumeSlider->getValue());
 
-  audioSettings.setEnabled(mySoundEnableCheckbox->getState());
-  instance().sound().setEnabled(mySoundEnableCheckbox->getState());
+  // Stereo
+  audioSettings.setStereo(myStereoSoundPopup->getSelectedTag().toString());
+  //TODO: instance().sound().setStereo(myStereoSoundPopup->getSelectedTag().toString());
 
   AudioSettings::Preset preset = static_cast<AudioSettings::Preset>(myModePopup->getSelectedTag().toInt());
   audioSettings.setPreset(preset);
@@ -222,12 +240,13 @@ void AudioDialog::saveConfig()
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 void AudioDialog::setDefaults()
 {
-  myResamplingPopup->setSelected(static_cast<int>(AudioSettings::DEFAULT_RESAMPLING_QUALITY));
-  myVolumeSlider->setValue(AudioSettings::DEFAULT_VOLUME);
   mySoundEnableCheckbox->setState(AudioSettings::DEFAULT_ENABLED);
+  myVolumeSlider->setValue(AudioSettings::DEFAULT_VOLUME);
+  myStereoSoundPopup->setSelected(AudioSettings::DEFAULT_STEREO);
   myModePopup->setSelected(static_cast<int>(AudioSettings::DEFAULT_PRESET));
 
   if (AudioSettings::DEFAULT_PRESET == AudioSettings::Preset::custom) {
+    myResamplingPopup->setSelected(static_cast<int>(AudioSettings::DEFAULT_RESAMPLING_QUALITY));
     myFragsizePopup->setSelected(AudioSettings::DEFAULT_FRAGMENT_SIZE);
     myFreqPopup->setSelected(AudioSettings::DEFAULT_SAMPLE_RATE);
     myHeadroomSlider->setValue(AudioSettings::DEFAULT_HEADROOM);
@@ -246,6 +265,7 @@ void AudioDialog::updateEnabledState()
   bool userMode = preset == AudioSettings::Preset::custom;
 
   myVolumeSlider->setEnabled(active);
+  myStereoSoundPopup->setEnabled(active);
   myModePopup->setEnabled(active);
 
   myFragsizePopup->setEnabled(active && userMode);
diff --git a/src/gui/AudioDialog.hxx b/src/gui/AudioDialog.hxx
index ba04bcd30..f63f1d1f0 100644
--- a/src/gui/AudioDialog.hxx
+++ b/src/gui/AudioDialog.hxx
@@ -62,6 +62,7 @@ class AudioDialog : public Dialog
     PopUpWidget*      myResamplingPopup;
     SliderWidget*     myHeadroomSlider;
     SliderWidget*     myBufferSizeSlider;
+    PopUpWidget*      myStereoSoundPopup;
 
   private:
     // Following constructors and assignment operators not supported