diff --git a/Source/Core/AudioCommon/AudioCommon.cpp b/Source/Core/AudioCommon/AudioCommon.cpp
index a8f09c2688..467406dd9c 100644
--- a/Source/Core/AudioCommon/AudioCommon.cpp
+++ b/Source/Core/AudioCommon/AudioCommon.cpp
@@ -101,6 +101,11 @@ std::string GetDefaultSoundBackend()
   return backend;
 }
 
+DPL2Quality GetDefaultDPL2Quality()
+{
+  return DPL2Quality::High;
+}
+
 std::vector<std::string> GetSoundBackends()
 {
   std::vector<std::string> backends;
diff --git a/Source/Core/AudioCommon/AudioCommon.h b/Source/Core/AudioCommon/AudioCommon.h
index d4dbd84a48..a294057590 100644
--- a/Source/Core/AudioCommon/AudioCommon.h
+++ b/Source/Core/AudioCommon/AudioCommon.h
@@ -9,6 +9,7 @@
 #include <string_view>
 #include <vector>
 
+#include "AudioCommon/Enums.h"
 #include "AudioCommon/SoundStream.h"
 
 class Mixer;
@@ -21,6 +22,7 @@ void InitSoundStream();
 void ShutdownSoundStream();
 std::string GetDefaultSoundBackend();
 std::vector<std::string> GetSoundBackends();
+DPL2Quality GetDefaultDPL2Quality();
 bool SupportsDPL2Decoder(std::string_view backend);
 bool SupportsLatencyControl(std::string_view backend);
 bool SupportsVolumeChanges(std::string_view backend);
diff --git a/Source/Core/AudioCommon/AudioCommon.vcxproj b/Source/Core/AudioCommon/AudioCommon.vcxproj
index 419cfa4ea6..09c8734b7d 100644
--- a/Source/Core/AudioCommon/AudioCommon.vcxproj
+++ b/Source/Core/AudioCommon/AudioCommon.vcxproj
@@ -53,6 +53,7 @@
     <ClInclude Include="AudioStretcher.h" />
     <ClInclude Include="CubebStream.h" />
     <ClInclude Include="CubebUtils.h" />
+    <ClInclude Include="Enums.h" />
     <ClInclude Include="Mixer.h" />
     <ClInclude Include="NullSoundStream.h" />
     <ClInclude Include="OpenALStream.h" />
diff --git a/Source/Core/AudioCommon/AudioCommon.vcxproj.filters b/Source/Core/AudioCommon/AudioCommon.vcxproj.filters
index 7f4c74fed6..0d9a4818ad 100644
--- a/Source/Core/AudioCommon/AudioCommon.vcxproj.filters
+++ b/Source/Core/AudioCommon/AudioCommon.vcxproj.filters
@@ -56,6 +56,7 @@
       <Filter>SoundStreams</Filter>
     </ClInclude>
     <ClInclude Include="SurroundDecoder.h" />
+    <ClInclude Include="Enums.h" />
   </ItemGroup>
   <ItemGroup>
     <Text Include="CMakeLists.txt" />
diff --git a/Source/Core/AudioCommon/CMakeLists.txt b/Source/Core/AudioCommon/CMakeLists.txt
index cac46b6b33..908c60ed5e 100644
--- a/Source/Core/AudioCommon/CMakeLists.txt
+++ b/Source/Core/AudioCommon/CMakeLists.txt
@@ -7,6 +7,7 @@ add_library(audiocommon
   CubebStream.h
   CubebUtils.cpp
   CubebUtils.h
+  Enums.h
   Mixer.cpp
   Mixer.h
   SurroundDecoder.cpp
diff --git a/Source/Core/AudioCommon/CubebStream.cpp b/Source/Core/AudioCommon/CubebStream.cpp
index da515aa8f3..5c3100c52c 100644
--- a/Source/Core/AudioCommon/CubebStream.cpp
+++ b/Source/Core/AudioCommon/CubebStream.cpp
@@ -37,7 +37,7 @@ bool CubebStream::Init()
   if (!m_ctx)
     return false;
 
-  m_stereo = !SConfig::GetInstance().bDPL2Decoder;
+  m_stereo = !SConfig::GetInstance().ShouldUseDPL2Decoder();
 
   cubeb_stream_params params;
   params.rate = m_mixer->GetSampleRate();
diff --git a/Source/Core/AudioCommon/Enums.h b/Source/Core/AudioCommon/Enums.h
new file mode 100644
index 0000000000..ec979ff941
--- /dev/null
+++ b/Source/Core/AudioCommon/Enums.h
@@ -0,0 +1,16 @@
+// Copyright 2019 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+namespace AudioCommon
+{
+enum class DPL2Quality
+{
+  Lowest = 0,
+  Low = 1,
+  High = 2,
+  Highest = 3
+};
+}  // namespace AudioCommon
diff --git a/Source/Core/AudioCommon/Mixer.cpp b/Source/Core/AudioCommon/Mixer.cpp
index 5c1cb3a33f..e414538613 100644
--- a/Source/Core/AudioCommon/Mixer.cpp
+++ b/Source/Core/AudioCommon/Mixer.cpp
@@ -3,6 +3,7 @@
 // Refer to the license.txt file included.
 
 #include "AudioCommon/Mixer.h"
+#include "AudioCommon/Enums.h"
 
 #include <algorithm>
 #include <cmath>
@@ -12,11 +13,28 @@
 #include "Common/CommonTypes.h"
 #include "Common/Logging/Log.h"
 #include "Common/Swap.h"
+#include "Core/Config/MainSettings.h"
 #include "Core/ConfigManager.h"
 
+static u32 DPL2QualityToFrameBlockSize(AudioCommon::DPL2Quality quality)
+{
+  switch (quality)
+  {
+  case AudioCommon::DPL2Quality::Lowest:
+    return 512;
+  case AudioCommon::DPL2Quality::Low:
+    return 1024;
+  case AudioCommon::DPL2Quality::Highest:
+    return 4096;
+  default:
+    return 2048;
+  }
+}
+
 Mixer::Mixer(unsigned int BackendSampleRate)
     : m_sampleRate(BackendSampleRate), m_stretcher(BackendSampleRate),
-      m_surround_decoder(BackendSampleRate, SURROUND_BLOCK_SIZE)
+      m_surround_decoder(BackendSampleRate,
+                         DPL2QualityToFrameBlockSize(Config::Get(Config::MAIN_DPL2_QUALITY)))
 {
   INFO_LOG(AUDIO_INTERFACE, "Mixer is initialized");
 }
diff --git a/Source/Core/AudioCommon/Mixer.h b/Source/Core/AudioCommon/Mixer.h
index 83a13cf5d6..b38ab7f47a 100644
--- a/Source/Core/AudioCommon/Mixer.h
+++ b/Source/Core/AudioCommon/Mixer.h
@@ -54,7 +54,6 @@ private:
   static constexpr u32 CONTROL_AVG = 32;  // In freq_shift per FIFO size offset
 
   const unsigned int SURROUND_CHANNELS = 6;
-  const unsigned int SURROUND_BLOCK_SIZE = 512;
 
   class MixerFifo final
   {
diff --git a/Source/Core/AudioCommon/OpenALStream.cpp b/Source/Core/AudioCommon/OpenALStream.cpp
index 4852495d23..887e0f97f2 100644
--- a/Source/Core/AudioCommon/OpenALStream.cpp
+++ b/Source/Core/AudioCommon/OpenALStream.cpp
@@ -221,7 +221,7 @@ void OpenALStream::SoundLoop()
 
   bool float32_capable = palIsExtensionPresent("AL_EXT_float32") != 0;
   bool surround_capable = palIsExtensionPresent("AL_EXT_MCFORMATS") || IsCreativeXFi();
-  bool use_surround = SConfig::GetInstance().bDPL2Decoder && surround_capable;
+  bool use_surround = SConfig::GetInstance().ShouldUseDPL2Decoder() && surround_capable;
 
   // As there is no extension to check for 32-bit fixed point support
   // and we know that only a X-Fi with hardware OpenAL supports it,
diff --git a/Source/Core/AudioCommon/PulseAudioStream.cpp b/Source/Core/AudioCommon/PulseAudioStream.cpp
index e480ed9e6e..8372683a25 100644
--- a/Source/Core/AudioCommon/PulseAudioStream.cpp
+++ b/Source/Core/AudioCommon/PulseAudioStream.cpp
@@ -19,7 +19,7 @@ PulseAudio::PulseAudio() = default;
 
 bool PulseAudio::Init()
 {
-  m_stereo = !SConfig::GetInstance().bDPL2Decoder;
+  m_stereo = !SConfig::GetInstance().ShouldUseDPL2Decoder();
   m_channels = m_stereo ? 2 : 6;  // will tell PA we use a Stereo or 5.0 channel setup
 
   NOTICE_LOG(AUDIO, "PulseAudio backend using %d channels", m_channels);
diff --git a/Source/Core/Core/Config/MainSettings.cpp b/Source/Core/Core/Config/MainSettings.cpp
index 4ab3f0733a..86e8f0a4a9 100644
--- a/Source/Core/Core/Config/MainSettings.cpp
+++ b/Source/Core/Core/Config/MainSettings.cpp
@@ -32,6 +32,8 @@ const ConfigInfo<int> MAIN_GC_LANGUAGE{{System::Main, "Core", "SelectedLanguage"
 const ConfigInfo<bool> MAIN_OVERRIDE_REGION_SETTINGS{
     {System::Main, "Core", "OverrideRegionSettings"}, false};
 const ConfigInfo<bool> MAIN_DPL2_DECODER{{System::Main, "Core", "DPL2Decoder"}, false};
+const ConfigInfo<AudioCommon::DPL2Quality> MAIN_DPL2_QUALITY{{System::Main, "Core", "DPL2Quality"},
+                                                             AudioCommon::GetDefaultDPL2Quality()};
 const ConfigInfo<int> MAIN_AUDIO_LATENCY{{System::Main, "Core", "AudioLatency"}, 20};
 const ConfigInfo<bool> MAIN_AUDIO_STRETCH{{System::Main, "Core", "AudioStretch"}, false};
 const ConfigInfo<int> MAIN_AUDIO_STRETCH_LATENCY{{System::Main, "Core", "AudioStretchMaxLatency"},
@@ -141,5 +143,4 @@ const ConfigInfo<std::string> MAIN_RESOURCEPACK_PATH{{System::Main, "General", "
                                                      ""};
 const ConfigInfo<std::string> MAIN_FS_PATH{{System::Main, "General", "NANDRootPath"}, ""};
 const ConfigInfo<std::string> MAIN_SD_PATH{{System::Main, "General", "WiiSDCardPath"}, ""};
-
 }  // namespace Config
diff --git a/Source/Core/Core/Config/MainSettings.h b/Source/Core/Core/Config/MainSettings.h
index 8172e5c23c..8278578a9c 100644
--- a/Source/Core/Core/Config/MainSettings.h
+++ b/Source/Core/Core/Config/MainSettings.h
@@ -13,6 +13,11 @@ namespace PowerPC
 enum class CPUCore;
 }
 
+namespace AudioCommon
+{
+enum class DPL2Quality;
+}
+
 namespace Config
 {
 // Main.Core
@@ -32,6 +37,7 @@ extern const ConfigInfo<bool> MAIN_ENABLE_CHEATS;
 extern const ConfigInfo<int> MAIN_GC_LANGUAGE;
 extern const ConfigInfo<bool> MAIN_OVERRIDE_REGION_SETTINGS;
 extern const ConfigInfo<bool> MAIN_DPL2_DECODER;
+extern const ConfigInfo<AudioCommon::DPL2Quality> MAIN_DPL2_QUALITY;
 extern const ConfigInfo<int> MAIN_AUDIO_LATENCY;
 extern const ConfigInfo<bool> MAIN_AUDIO_STRETCH;
 extern const ConfigInfo<int> MAIN_AUDIO_STRETCH_LATENCY;
@@ -108,5 +114,4 @@ extern const ConfigInfo<std::string> MAIN_LOAD_PATH;
 extern const ConfigInfo<std::string> MAIN_RESOURCEPACK_PATH;
 extern const ConfigInfo<std::string> MAIN_FS_PATH;
 extern const ConfigInfo<std::string> MAIN_SD_PATH;
-
 }  // namespace Config
diff --git a/Source/Core/Core/ConfigLoaders/IsSettingSaveable.cpp b/Source/Core/Core/ConfigLoaders/IsSettingSaveable.cpp
index 9483aed414..629bba3a2d 100644
--- a/Source/Core/Core/ConfigLoaders/IsSettingSaveable.cpp
+++ b/Source/Core/Core/ConfigLoaders/IsSettingSaveable.cpp
@@ -35,6 +35,8 @@ bool IsSettingSaveable(const Config::ConfigLocation& config_location)
       Config::MAIN_MEMCARD_A_PATH.location,
       Config::MAIN_MEMCARD_B_PATH.location,
       Config::MAIN_AUTO_DISC_CHANGE.location,
+      Config::MAIN_DPL2_DECODER.location,
+      Config::MAIN_DPL2_QUALITY.location,
 
       // Main.Display
       Config::MAIN_FULLSCREEN_DISPLAY_RES.location,
@@ -145,7 +147,6 @@ bool IsSettingSaveable(const Config::ConfigLocation& config_location)
       // UI.General
 
       Config::MAIN_USE_DISCORD_PRESENCE.location,
-
   };
 
   return std::find(s_setting_saveable.begin(), s_setting_saveable.end(), config_location) !=
diff --git a/Source/Core/Core/ConfigManager.cpp b/Source/Core/Core/ConfigManager.cpp
index 1915a7eb5f..44a85b0de4 100644
--- a/Source/Core/Core/ConfigManager.cpp
+++ b/Source/Core/Core/ConfigManager.cpp
@@ -1065,3 +1065,8 @@ IniFile SConfig::LoadGameIni(const std::string& id, std::optional<u16> revision)
     game_ini.Load(File::GetUserPath(D_GAMESETTINGS_IDX) + filename, true);
   return game_ini;
 }
+
+bool SConfig::ShouldUseDPL2Decoder() const
+{
+  return bDPL2Decoder && !bDSPHLE;
+}
diff --git a/Source/Core/Core/ConfigManager.h b/Source/Core/Core/ConfigManager.h
index 36f7ac353a..6de44b41e1 100644
--- a/Source/Core/Core/ConfigManager.h
+++ b/Source/Core/Core/ConfigManager.h
@@ -173,6 +173,9 @@ struct SConfig
   bool bEnableCustomRTC;
   u32 m_customRTCValue;
 
+  // DPL2
+  bool ShouldUseDPL2Decoder() const;
+
   DiscIO::Region m_region;
 
   std::string m_strVideoBackend;
diff --git a/Source/Core/DolphinQt/Settings/AudioPane.cpp b/Source/Core/DolphinQt/Settings/AudioPane.cpp
index 8c3df4ec76..a43e845265 100644
--- a/Source/Core/DolphinQt/Settings/AudioPane.cpp
+++ b/Source/Core/DolphinQt/Settings/AudioPane.cpp
@@ -18,6 +18,7 @@
 #include <QVBoxLayout>
 
 #include "AudioCommon/AudioCommon.h"
+#include "AudioCommon/Enums.h"
 #include "AudioCommon/WASAPIStream.h"
 
 #include "Core/Config/MainSettings.h"
@@ -93,6 +94,29 @@ void AudioPane::CreateWidgets()
   m_dolby_pro_logic->setToolTip(
       tr("Enables Dolby Pro Logic II emulation using 5.1 surround. Certain backends only."));
 
+  auto* dolby_quality_layout = new QHBoxLayout;
+
+  m_dolby_quality_label = new QLabel(tr("Decoding Quality:"));
+
+  m_dolby_quality_slider = new QSlider(Qt::Horizontal);
+  m_dolby_quality_slider->setMinimum(0);
+  m_dolby_quality_slider->setMaximum(3);
+  m_dolby_quality_slider->setPageStep(1);
+  m_dolby_quality_slider->setTickPosition(QSlider::TicksBelow);
+  m_dolby_quality_slider->setToolTip(
+      tr("Quality of the DPLII decoder. Audio latency increases with quality."));
+  m_dolby_quality_slider->setTracking(true);
+
+  m_dolby_quality_low_label = new QLabel(GetDPL2QualityLabel(AudioCommon::DPL2Quality::Lowest));
+  m_dolby_quality_highest_label =
+      new QLabel(GetDPL2QualityLabel(AudioCommon::DPL2Quality::Highest));
+  m_dolby_quality_latency_label =
+      new QLabel(GetDPL2ApproximateLatencyLabel(AudioCommon::DPL2Quality::Highest));
+
+  dolby_quality_layout->addWidget(m_dolby_quality_low_label);
+  dolby_quality_layout->addWidget(m_dolby_quality_slider);
+  dolby_quality_layout->addWidget(m_dolby_quality_highest_label);
+
   backend_layout->setFormAlignment(Qt::AlignLeft | Qt::AlignTop);
   backend_layout->setFieldGrowthPolicy(QFormLayout::AllNonFixedFieldsGrow);
   backend_layout->addRow(m_backend_label, m_backend_combo);
@@ -107,6 +131,9 @@ void AudioPane::CreateWidgets()
 #endif
 
   backend_layout->addRow(m_dolby_pro_logic);
+  backend_layout->addRow(m_dolby_quality_label);
+  backend_layout->addRow(dolby_quality_layout);
+  backend_layout->addRow(m_dolby_quality_latency_label);
 
   auto* stretching_box = new QGroupBox(tr("Audio Stretching Settings"));
   auto* stretching_layout = new QGridLayout;
@@ -154,6 +181,7 @@ void AudioPane::ConnectWidgets()
   }
   connect(m_stretching_buffer_slider, &QSlider::valueChanged, this, &AudioPane::SaveSettings);
   connect(m_dolby_pro_logic, &QCheckBox::toggled, this, &AudioPane::SaveSettings);
+  connect(m_dolby_quality_slider, &QSlider::valueChanged, this, &AudioPane::SaveSettings);
   connect(m_stretching_enable, &QCheckBox::toggled, this, &AudioPane::SaveSettings);
   connect(m_dsp_hle, &QRadioButton::toggled, this, &AudioPane::SaveSettings);
   connect(m_dsp_lle, &QRadioButton::toggled, this, &AudioPane::SaveSettings);
@@ -203,6 +231,13 @@ void AudioPane::LoadSettings()
 
   // DPL2
   m_dolby_pro_logic->setChecked(SConfig::GetInstance().bDPL2Decoder);
+  m_dolby_quality_slider->setValue(int(Config::Get(Config::MAIN_DPL2_QUALITY)));
+  m_dolby_quality_latency_label->setText(
+      GetDPL2ApproximateLatencyLabel(Config::Get(Config::MAIN_DPL2_QUALITY)));
+  if (AudioCommon::SupportsDPL2Decoder(current))
+  {
+    EnableDolbyQualityWidgets(m_dolby_pro_logic->isChecked());
+  }
 
   // Latency
   if (m_latency_control_supported)
@@ -232,6 +267,11 @@ void AudioPane::SaveSettings()
   auto& settings = Settings::Instance();
 
   // DSP
+  if (SConfig::GetInstance().bDSPHLE != m_dsp_hle->isChecked() ||
+      SConfig::GetInstance().m_DSPEnableJIT != m_dsp_lle->isChecked())
+  {
+    OnDspChanged();
+  }
   SConfig::GetInstance().bDSPHLE = m_dsp_hle->isChecked();
   Config::SetBaseOrCurrent(Config::MAIN_DSP_HLE, m_dsp_hle->isChecked());
   SConfig::GetInstance().m_DSPEnableJIT = m_dsp_lle->isChecked();
@@ -257,6 +297,14 @@ void AudioPane::SaveSettings()
 
   // DPL2
   SConfig::GetInstance().bDPL2Decoder = m_dolby_pro_logic->isChecked();
+  Config::SetBase(Config::MAIN_DPL2_QUALITY,
+                  static_cast<AudioCommon::DPL2Quality>(m_dolby_quality_slider->value()));
+  m_dolby_quality_latency_label->setText(
+      GetDPL2ApproximateLatencyLabel(Config::Get(Config::MAIN_DPL2_QUALITY)));
+  if (AudioCommon::SupportsDPL2Decoder(backend) && !m_dsp_hle->isChecked())
+  {
+    EnableDolbyQualityWidgets(m_dolby_pro_logic->isChecked());
+  }
 
   // Latency
   if (m_latency_control_supported)
@@ -283,11 +331,22 @@ void AudioPane::SaveSettings()
   AudioCommon::UpdateSoundStream();
 }
 
+void AudioPane::OnDspChanged()
+{
+  const auto backend = SConfig::GetInstance().sBackend;
+
+  m_dolby_pro_logic->setEnabled(AudioCommon::SupportsDPL2Decoder(backend) &&
+                                !m_dsp_hle->isChecked());
+  EnableDolbyQualityWidgets(AudioCommon::SupportsDPL2Decoder(backend) && !m_dsp_hle->isChecked());
+}
+
 void AudioPane::OnBackendChanged()
 {
   const auto backend = SConfig::GetInstance().sBackend;
 
-  m_dolby_pro_logic->setEnabled(AudioCommon::SupportsDPL2Decoder(backend));
+  m_dolby_pro_logic->setEnabled(AudioCommon::SupportsDPL2Decoder(backend) &&
+                                !m_dsp_hle->isChecked());
+  EnableDolbyQualityWidgets(AudioCommon::SupportsDPL2Decoder(backend) && !m_dsp_hle->isChecked());
   if (m_latency_control_supported)
   {
     m_latency_label->setEnabled(AudioCommon::SupportsLatencyControl(backend));
@@ -318,9 +377,13 @@ void AudioPane::OnEmulationStateChanged(bool running)
   m_dsp_hle->setEnabled(!running);
   m_dsp_lle->setEnabled(!running);
   m_dsp_interpreter->setEnabled(!running);
-  m_dolby_pro_logic->setEnabled(!running);
   m_backend_label->setEnabled(!running);
   m_backend_combo->setEnabled(!running);
+  if (AudioCommon::SupportsDPL2Decoder(SConfig::GetInstance().sBackend) && !m_dsp_hle->isChecked())
+  {
+    m_dolby_pro_logic->setEnabled(!running);
+    EnableDolbyQualityWidgets(!running);
+  }
   if (m_latency_control_supported)
   {
     m_latency_label->setEnabled(!running);
@@ -344,3 +407,42 @@ void AudioPane::CheckNeedForLatencyControl()
   m_latency_control_supported =
       std::any_of(backends.cbegin(), backends.cend(), AudioCommon::SupportsLatencyControl);
 }
+
+QString AudioPane::GetDPL2QualityLabel(AudioCommon::DPL2Quality value) const
+{
+  switch (value)
+  {
+  case AudioCommon::DPL2Quality::Lowest:
+    return tr("Lowest");
+  case AudioCommon::DPL2Quality::Low:
+    return tr("Low");
+  case AudioCommon::DPL2Quality::Highest:
+    return tr("Highest");
+  default:
+    return tr("High");
+  }
+}
+
+QString AudioPane::GetDPL2ApproximateLatencyLabel(AudioCommon::DPL2Quality value) const
+{
+  switch (value)
+  {
+  case AudioCommon::DPL2Quality::Lowest:
+    return tr("Latency: ~10ms");
+  case AudioCommon::DPL2Quality::Low:
+    return tr("Latency: ~20ms");
+  case AudioCommon::DPL2Quality::Highest:
+    return tr("Latency: ~80ms");
+  default:
+    return tr("Latency: ~40ms");
+  }
+}
+
+void AudioPane::EnableDolbyQualityWidgets(bool enabled) const
+{
+  m_dolby_quality_label->setEnabled(enabled);
+  m_dolby_quality_slider->setEnabled(enabled);
+  m_dolby_quality_low_label->setEnabled(enabled);
+  m_dolby_quality_highest_label->setEnabled(enabled);
+  m_dolby_quality_latency_label->setEnabled(enabled);
+}
diff --git a/Source/Core/DolphinQt/Settings/AudioPane.h b/Source/Core/DolphinQt/Settings/AudioPane.h
index 45bd6d6c60..3348e5e908 100644
--- a/Source/Core/DolphinQt/Settings/AudioPane.h
+++ b/Source/Core/DolphinQt/Settings/AudioPane.h
@@ -6,6 +6,11 @@
 
 #include <QWidget>
 
+namespace AudioCommon
+{
+enum class DPL2Quality;
+}
+
 class QCheckBox;
 class QComboBox;
 class QLabel;
@@ -30,11 +35,16 @@ private:
 
   void OnEmulationStateChanged(bool running);
   void OnBackendChanged();
+  void OnDspChanged();
   void OnVolumeChanged(int volume);
 
   void CheckNeedForLatencyControl();
   bool m_latency_control_supported;
 
+  QString GetDPL2QualityLabel(AudioCommon::DPL2Quality value) const;
+  QString GetDPL2ApproximateLatencyLabel(AudioCommon::DPL2Quality value) const;
+  void EnableDolbyQualityWidgets(bool enabled) const;
+
   QGridLayout* m_main_layout;
 
   // DSP Engine
@@ -50,6 +60,11 @@ private:
   QLabel* m_backend_label;
   QComboBox* m_backend_combo;
   QCheckBox* m_dolby_pro_logic;
+  QLabel* m_dolby_quality_label;
+  QSlider* m_dolby_quality_slider;
+  QLabel* m_dolby_quality_low_label;
+  QLabel* m_dolby_quality_highest_label;
+  QLabel* m_dolby_quality_latency_label;
   QLabel* m_latency_label;
   QSpinBox* m_latency_spin;
 #ifdef _WIN32