diff --git a/Source/Core/AudioCommon/AudioCommon.cpp b/Source/Core/AudioCommon/AudioCommon.cpp
index 19ac9f6e9f..8800fddcf5 100644
--- a/Source/Core/AudioCommon/AudioCommon.cpp
+++ b/Source/Core/AudioCommon/AudioCommon.cpp
@@ -19,15 +19,10 @@
 #include "Common/Logging/Log.h"
 #include "Core/Config/MainSettings.h"
 #include "Core/ConfigManager.h"
-
-// This shouldn't be a global, at least not here.
-std::unique_ptr<SoundStream> g_sound_stream;
+#include "Core/System.h"
 
 namespace AudioCommon
 {
-static bool s_audio_dump_start = false;
-static bool s_sound_stream_running = false;
-
 constexpr int AUDIO_VOLUME_MIN = 0;
 constexpr int AUDIO_VOLUME_MAX = 100;
 
@@ -53,44 +48,50 @@ static std::unique_ptr<SoundStream> CreateSoundStreamForBackend(std::string_view
 void InitSoundStream()
 {
   std::string backend = Config::Get(Config::MAIN_AUDIO_BACKEND);
-  g_sound_stream = CreateSoundStreamForBackend(backend);
+  std::unique_ptr<SoundStream> sound_stream = CreateSoundStreamForBackend(backend);
 
-  if (!g_sound_stream)
+  if (!sound_stream)
   {
     WARN_LOG_FMT(AUDIO, "Unknown backend {}, using {} instead.", backend, GetDefaultSoundBackend());
     backend = GetDefaultSoundBackend();
-    g_sound_stream = CreateSoundStreamForBackend(GetDefaultSoundBackend());
+    sound_stream = CreateSoundStreamForBackend(backend);
   }
 
-  if (!g_sound_stream || !g_sound_stream->Init())
+  if (!sound_stream || !sound_stream->Init())
   {
     WARN_LOG_FMT(AUDIO, "Could not initialize backend {}, using {} instead.", backend,
                  BACKEND_NULLSOUND);
-    g_sound_stream = std::make_unique<NullSound>();
-    g_sound_stream->Init();
+    sound_stream = std::make_unique<NullSound>();
+    sound_stream->Init();
   }
+
+  Core::System::GetInstance().SetSoundStream(std::move(sound_stream));
 }
 
 void PostInitSoundStream()
 {
+  auto& system = Core::System::GetInstance();
+
   // This needs to be called after AudioInterface::Init and SerialInterface::Init (for GBA devices)
   // where input sample rates are set
   UpdateSoundStream();
   SetSoundStreamRunning(true);
 
-  if (Config::Get(Config::MAIN_DUMP_AUDIO) && !s_audio_dump_start)
+  if (Config::Get(Config::MAIN_DUMP_AUDIO) && !system.IsAudioDumpStarted())
     StartAudioDump();
 }
 
 void ShutdownSoundStream()
 {
+  auto& system = Core::System::GetInstance();
+
   INFO_LOG_FMT(AUDIO, "Shutting down sound stream");
 
-  if (Config::Get(Config::MAIN_DUMP_AUDIO) && s_audio_dump_start)
+  if (Config::Get(Config::MAIN_DUMP_AUDIO) && system.IsAudioDumpStarted())
     StopAudioDump();
 
   SetSoundStreamRunning(false);
-  g_sound_stream.reset();
+  system.SetSoundStream(nullptr);
 
   INFO_LOG_FMT(AUDIO, "Done shutting down sound stream");
 }
@@ -162,23 +163,29 @@ bool SupportsVolumeChanges(std::string_view backend)
 
 void UpdateSoundStream()
 {
-  if (g_sound_stream)
+  auto& system = Core::System::GetInstance();
+  SoundStream* sound_stream = system.GetSoundStream();
+
+  if (sound_stream)
   {
     int volume = Config::Get(Config::MAIN_AUDIO_MUTED) ? 0 : Config::Get(Config::MAIN_AUDIO_VOLUME);
-    g_sound_stream->SetVolume(volume);
+    sound_stream->SetVolume(volume);
   }
 }
 
 void SetSoundStreamRunning(bool running)
 {
-  if (!g_sound_stream)
+  auto& system = Core::System::GetInstance();
+  SoundStream* sound_stream = system.GetSoundStream();
+
+  if (!sound_stream)
     return;
 
-  if (s_sound_stream_running == running)
+  if (system.IsSoundStreamRunning() == running)
     return;
-  s_sound_stream_running = running;
+  system.SetSoundStreamRunning(running);
 
-  if (g_sound_stream->SetRunning(running))
+  if (sound_stream->SetRunning(running))
     return;
   if (running)
     ERROR_LOG_FMT(AUDIO, "Error starting stream.");
@@ -188,24 +195,30 @@ void SetSoundStreamRunning(bool running)
 
 void SendAIBuffer(const short* samples, unsigned int num_samples)
 {
-  if (!g_sound_stream)
+  auto& system = Core::System::GetInstance();
+  SoundStream* sound_stream = system.GetSoundStream();
+
+  if (!sound_stream)
     return;
 
-  if (Config::Get(Config::MAIN_DUMP_AUDIO) && !s_audio_dump_start)
+  if (Config::Get(Config::MAIN_DUMP_AUDIO) && !system.IsAudioDumpStarted())
     StartAudioDump();
-  else if (!Config::Get(Config::MAIN_DUMP_AUDIO) && s_audio_dump_start)
+  else if (!Config::Get(Config::MAIN_DUMP_AUDIO) && system.IsAudioDumpStarted())
     StopAudioDump();
 
-  Mixer* pMixer = g_sound_stream->GetMixer();
+  Mixer* mixer = sound_stream->GetMixer();
 
-  if (pMixer && samples)
+  if (mixer && samples)
   {
-    pMixer->PushSamples(samples, num_samples);
+    mixer->PushSamples(samples, num_samples);
   }
 }
 
 void StartAudioDump()
 {
+  auto& system = Core::System::GetInstance();
+  SoundStream* sound_stream = system.GetSoundStream();
+
   std::time_t start_time = std::time(nullptr);
 
   std::string path_prefix = File::GetUserPath(D_DUMPAUDIO_IDX) + SConfig::GetInstance().GetGameID();
@@ -217,18 +230,21 @@ void StartAudioDump()
   const std::string audio_file_name_dsp = fmt::format("{}_dspdump.wav", base_name);
   File::CreateFullPath(audio_file_name_dtk);
   File::CreateFullPath(audio_file_name_dsp);
-  g_sound_stream->GetMixer()->StartLogDTKAudio(audio_file_name_dtk);
-  g_sound_stream->GetMixer()->StartLogDSPAudio(audio_file_name_dsp);
-  s_audio_dump_start = true;
+  sound_stream->GetMixer()->StartLogDTKAudio(audio_file_name_dtk);
+  sound_stream->GetMixer()->StartLogDSPAudio(audio_file_name_dsp);
+  system.SetAudioDumpStarted(true);
 }
 
 void StopAudioDump()
 {
-  if (!g_sound_stream)
+  auto& system = Core::System::GetInstance();
+  SoundStream* sound_stream = system.GetSoundStream();
+
+  if (!sound_stream)
     return;
-  g_sound_stream->GetMixer()->StopLogDTKAudio();
-  g_sound_stream->GetMixer()->StopLogDSPAudio();
-  s_audio_dump_start = false;
+  sound_stream->GetMixer()->StopLogDTKAudio();
+  sound_stream->GetMixer()->StopLogDSPAudio();
+  system.SetAudioDumpStarted(false);
 }
 
 void IncreaseVolume(unsigned short offset)
diff --git a/Source/Core/AudioCommon/AudioCommon.h b/Source/Core/AudioCommon/AudioCommon.h
index ad0ea820c3..84e3cd0a62 100644
--- a/Source/Core/AudioCommon/AudioCommon.h
+++ b/Source/Core/AudioCommon/AudioCommon.h
@@ -13,8 +13,6 @@
 
 class Mixer;
 
-extern std::unique_ptr<SoundStream> g_sound_stream;
-
 namespace AudioCommon
 {
 void InitSoundStream();
diff --git a/Source/Core/Core/Core.cpp b/Source/Core/Core/Core.cpp
index 26fe5444ba..a3d2379db7 100644
--- a/Source/Core/Core/Core.cpp
+++ b/Source/Core/Core/Core.cpp
@@ -956,10 +956,12 @@ void UpdateTitle(u64 elapsed_ms)
   }
 
   // Update the audio timestretcher with the current speed
-  if (g_sound_stream)
+  auto& system = Core::System::GetInstance();
+  SoundStream* sound_stream = system.GetSoundStream();
+  if (sound_stream)
   {
-    Mixer* pMixer = g_sound_stream->GetMixer();
-    pMixer->UpdateSpeed((float)Speed / 100);
+    Mixer* mixer = sound_stream->GetMixer();
+    mixer->UpdateSpeed((float)Speed / 100);
   }
 
   Host_UpdateTitle(message);
diff --git a/Source/Core/Core/HW/AudioInterface.cpp b/Source/Core/Core/HW/AudioInterface.cpp
index de7590390e..c3b0624289 100644
--- a/Source/Core/Core/HW/AudioInterface.cpp
+++ b/Source/Core/Core/HW/AudioInterface.cpp
@@ -48,6 +48,7 @@ This file mainly deals with the [Drive I/F], however [AIDFR] controls
 #include "Core/HW/ProcessorInterface.h"
 #include "Core/HW/SystemTimers.h"
 #include "Core/PowerPC/PowerPC.h"
+#include "Core/System.h"
 
 namespace AudioInterface
 {
@@ -126,7 +127,9 @@ void DoState(PointerWrap& p)
   p.Do(s_aid_sample_rate_divisor);
   p.Do(s_cpu_cycles_per_sample);
 
-  g_sound_stream->GetMixer()->DoState(p);
+  auto& system = Core::System::GetInstance();
+  SoundStream* sound_stream = system.GetSoundStream();
+  sound_stream->GetMixer()->DoState(p);
 }
 
 static void GenerateAudioInterrupt();
@@ -155,8 +158,10 @@ void Init()
 
   event_type_ai = CoreTiming::RegisterEvent("AICallback", Update);
 
-  g_sound_stream->GetMixer()->SetDMAInputSampleRateDivisor(GetAIDSampleRateDivisor());
-  g_sound_stream->GetMixer()->SetStreamInputSampleRateDivisor(GetAISSampleRateDivisor());
+  auto& system = Core::System::GetInstance();
+  SoundStream* sound_stream = system.GetSoundStream();
+  sound_stream->GetMixer()->SetDMAInputSampleRateDivisor(GetAIDSampleRateDivisor());
+  sound_stream->GetMixer()->SetStreamInputSampleRateDivisor(GetAISSampleRateDivisor());
 }
 
 void Shutdown()
@@ -182,6 +187,9 @@ void RegisterMMIO(MMIO::Mapping* mmio, u32 base)
           s_control.AIINTVLD = tmp_ai_ctrl.AIINTVLD;
         }
 
+        auto& system = Core::System::GetInstance();
+        SoundStream* sound_stream = system.GetSoundStream();
+
         // Set frequency of streaming audio
         if (tmp_ai_ctrl.AISFR != s_control.AISFR)
         {
@@ -191,7 +199,7 @@ void RegisterMMIO(MMIO::Mapping* mmio, u32 base)
           s_control.AISFR = tmp_ai_ctrl.AISFR;
           s_ais_sample_rate_divisor =
               tmp_ai_ctrl.AISFR ? Get48KHzSampleRateDivisor() : Get32KHzSampleRateDivisor();
-          g_sound_stream->GetMixer()->SetStreamInputSampleRateDivisor(s_ais_sample_rate_divisor);
+          sound_stream->GetMixer()->SetStreamInputSampleRateDivisor(s_ais_sample_rate_divisor);
           s_cpu_cycles_per_sample = static_cast<u64>(SystemTimers::GetTicksPerSecond()) *
                                     s_ais_sample_rate_divisor / Mixer::FIXED_SAMPLE_RATE_DIVIDEND;
         }
@@ -203,7 +211,7 @@ void RegisterMMIO(MMIO::Mapping* mmio, u32 base)
           s_control.AIDFR = tmp_ai_ctrl.AIDFR;
           s_aid_sample_rate_divisor =
               tmp_ai_ctrl.AIDFR ? Get32KHzSampleRateDivisor() : Get48KHzSampleRateDivisor();
-          g_sound_stream->GetMixer()->SetDMAInputSampleRateDivisor(s_aid_sample_rate_divisor);
+          sound_stream->GetMixer()->SetDMAInputSampleRateDivisor(s_aid_sample_rate_divisor);
         }
 
         // Streaming counter
@@ -240,7 +248,9 @@ void RegisterMMIO(MMIO::Mapping* mmio, u32 base)
   mmio->Register(base | AI_VOLUME_REGISTER, MMIO::DirectRead<u32>(&s_volume.hex),
                  MMIO::ComplexWrite<u32>([](u32, u32 val) {
                    s_volume.hex = val;
-                   g_sound_stream->GetMixer()->SetStreamingVolume(s_volume.left, s_volume.right);
+                   auto& system = Core::System::GetInstance();
+                   SoundStream* sound_stream = system.GetSoundStream();
+                   sound_stream->GetMixer()->SetStreamingVolume(s_volume.left, s_volume.right);
                  }));
 
   mmio->Register(base | AI_SAMPLE_COUNTER, MMIO::ComplexRead<u32>([](u32) {
diff --git a/Source/Core/Core/HW/DVD/DVDInterface.cpp b/Source/Core/Core/HW/DVD/DVDInterface.cpp
index bac1652fa0..9cb907a9d5 100644
--- a/Source/Core/Core/HW/DVD/DVDInterface.cpp
+++ b/Source/Core/Core/HW/DVD/DVDInterface.cpp
@@ -34,6 +34,7 @@
 #include "Core/IOS/DI/DI.h"
 #include "Core/IOS/IOS.h"
 #include "Core/Movie.h"
+#include "Core/System.h"
 
 #include "DiscIO/Blob.h"
 #include "DiscIO/DiscUtils.h"
@@ -312,7 +313,10 @@ static void DTKStreamingCallback(DIInterruptType interrupt_type, const std::vect
     // Send audio to the mixer.
     std::vector<s16> temp_pcm(s_pending_samples * 2, 0);
     ProcessDTKSamples(&temp_pcm, audio_data);
-    g_sound_stream->GetMixer()->PushStreamingSamples(temp_pcm.data(), s_pending_samples);
+
+    auto& system = Core::System::GetInstance();
+    SoundStream* sound_stream = system.GetSoundStream();
+    sound_stream->GetMixer()->PushStreamingSamples(temp_pcm.data(), s_pending_samples);
 
     if (s_stream && AudioInterface::IsPlaying())
     {
diff --git a/Source/Core/Core/HW/GBACore.cpp b/Source/Core/Core/HW/GBACore.cpp
index d60e1308ad..cb62141522 100644
--- a/Source/Core/Core/HW/GBACore.cpp
+++ b/Source/Core/Core/HW/GBACore.cpp
@@ -30,6 +30,7 @@
 #include "Core/HW/SystemTimers.h"
 #include "Core/Host.h"
 #include "Core/NetPlayProto.h"
+#include "Core/System.h"
 
 namespace HW::GBA
 {
@@ -403,7 +404,10 @@ void Core::SetSampleRates()
   m_core->setAudioBufferSize(m_core, SAMPLES);
   blip_set_rates(m_core->getAudioChannel(m_core, 0), m_core->frequency(m_core), SAMPLE_RATE);
   blip_set_rates(m_core->getAudioChannel(m_core, 1), m_core->frequency(m_core), SAMPLE_RATE);
-  g_sound_stream->GetMixer()->SetGBAInputSampleRateDivisors(
+
+  auto& system = ::Core::System::GetInstance();
+  SoundStream* sound_stream = system.GetSoundStream();
+  sound_stream->GetMixer()->SetGBAInputSampleRateDivisors(
       m_device_number, Mixer::FIXED_SAMPLE_RATE_DIVIDEND / SAMPLE_RATE);
 }
 
@@ -436,7 +440,10 @@ void Core::SetAVStream()
     std::vector<s16> buffer(SAMPLES * 2);
     blip_read_samples(left, &buffer[0], SAMPLES, 1);
     blip_read_samples(right, &buffer[1], SAMPLES, 1);
-    g_sound_stream->GetMixer()->PushGBASamples(core->m_device_number, &buffer[0], SAMPLES);
+
+    auto& system = ::Core::System::GetInstance();
+    SoundStream* sound_stream = system.GetSoundStream();
+    sound_stream->GetMixer()->PushGBASamples(core->m_device_number, &buffer[0], SAMPLES);
   };
   m_core->setAVStream(m_core, &m_stream);
 }
diff --git a/Source/Core/Core/HW/WiimoteEmu/Speaker.cpp b/Source/Core/Core/HW/WiimoteEmu/Speaker.cpp
index 0862fcba76..58295c796d 100644
--- a/Source/Core/Core/HW/WiimoteEmu/Speaker.cpp
+++ b/Source/Core/Core/HW/WiimoteEmu/Speaker.cpp
@@ -11,6 +11,7 @@
 #include "Common/MathUtil.h"
 #include "Core/ConfigManager.h"
 #include "Core/HW/WiimoteEmu/WiimoteEmu.h"
+#include "Core/System.h"
 #include "InputCommon/ControllerEmu/ControlGroup/ControlGroup.h"
 #include "InputCommon/ControllerEmu/Setting/NumericSetting.h"
 
@@ -141,11 +142,14 @@ void SpeakerLogic::SpeakerData(const u8* data, int length, float speaker_pan)
   const u32 l_volume = std::min(u32(std::min(1.f - speaker_pan, 1.f) * volume), 255u);
   const u32 r_volume = std::min(u32(std::min(1.f + speaker_pan, 1.f) * volume), 255u);
 
-  g_sound_stream->GetMixer()->SetWiimoteSpeakerVolume(l_volume, r_volume);
+  auto& system = Core::System::GetInstance();
+  SoundStream* sound_stream = system.GetSoundStream();
+
+  sound_stream->GetMixer()->SetWiimoteSpeakerVolume(l_volume, r_volume);
 
   // ADPCM sample rate is thought to be x2.(3000 x2 = 6000).
   const unsigned int sample_rate = sample_rate_dividend / reg_data.sample_rate;
-  g_sound_stream->GetMixer()->PushWiimoteSpeakerSamples(
+  sound_stream->GetMixer()->PushWiimoteSpeakerSamples(
       samples.get(), sample_length, Mixer::FIXED_SAMPLE_RATE_DIVIDEND / (sample_rate * 2));
 
 #ifdef WIIMOTE_SPEAKER_DUMP
diff --git a/Source/Core/Core/System.cpp b/Source/Core/Core/System.cpp
index e7e14ea91e..4320bded39 100644
--- a/Source/Core/Core/System.cpp
+++ b/Source/Core/Core/System.cpp
@@ -3,12 +3,18 @@
 
 #include "Core/System.h"
 
+#include <memory>
+
+#include "AudioCommon/SoundStream.h"
 #include "Core/Config/MainSettings.h"
 
 namespace Core
 {
 struct System::Impl
 {
+  std::unique_ptr<SoundStream> m_sound_stream;
+  bool m_sound_stream_running = false;
+  bool m_audio_dump_started = false;
 };
 
 System::System() : m_impl{std::make_unique<Impl>()}
@@ -22,4 +28,34 @@ void System::Initialize()
   m_separate_cpu_and_gpu_threads = Config::Get(Config::MAIN_CPU_THREAD);
   m_mmu_enabled = Config::Get(Config::MAIN_MMU);
 }
+
+SoundStream* System::GetSoundStream() const
+{
+  return m_impl->m_sound_stream.get();
+}
+
+void System::SetSoundStream(std::unique_ptr<SoundStream> sound_stream)
+{
+  m_impl->m_sound_stream = std::move(sound_stream);
+}
+
+bool System::IsSoundStreamRunning() const
+{
+  return m_impl->m_sound_stream_running;
+}
+
+void System::SetSoundStreamRunning(bool running)
+{
+  m_impl->m_sound_stream_running = running;
+}
+
+bool System::IsAudioDumpStarted() const
+{
+  return m_impl->m_audio_dump_started;
+}
+
+void System::SetAudioDumpStarted(bool started)
+{
+  m_impl->m_audio_dump_started = started;
+}
 }  // namespace Core
diff --git a/Source/Core/Core/System.h b/Source/Core/Core/System.h
index 14d48ce477..85b7087095 100644
--- a/Source/Core/Core/System.h
+++ b/Source/Core/Core/System.h
@@ -5,6 +5,8 @@
 
 #include <memory>
 
+class SoundStream;
+
 namespace Core
 {
 // Central class that encapsulates the running system.
@@ -31,6 +33,13 @@ public:
   bool IsDualCoreMode() const { return m_separate_cpu_and_gpu_threads; }
   bool IsMMUMode() const { return m_mmu_enabled; }
 
+  SoundStream* GetSoundStream() const;
+  void SetSoundStream(std::unique_ptr<SoundStream> sound_stream);
+  bool IsSoundStreamRunning() const;
+  void SetSoundStreamRunning(bool running);
+  bool IsAudioDumpStarted() const;
+  void SetAudioDumpStarted(bool started);
+
 private:
   System();
 
diff --git a/Source/Core/DolphinQt/GBAWidget.cpp b/Source/Core/DolphinQt/GBAWidget.cpp
index 2fd36ac070..f009f4206c 100644
--- a/Source/Core/DolphinQt/GBAWidget.cpp
+++ b/Source/Core/DolphinQt/GBAWidget.cpp
@@ -26,6 +26,7 @@
 #include "Core/HW/SI/SI_Device.h"
 #include "Core/Movie.h"
 #include "Core/NetPlayProto.h"
+#include "Core/System.h"
 #include "DolphinQt/QtUtils/DolphinFileDialog.h"
 #include "DolphinQt/QtUtils/ModalMessageBox.h"
 #include "DolphinQt/Resources.h"
@@ -325,7 +326,8 @@ void GBAWidget::UpdateTitle()
 void GBAWidget::UpdateVolume()
 {
   int volume = m_muted ? 0 : m_volume * 256 / 100;
-  g_sound_stream->GetMixer()->SetGBAVolume(m_core_info.device_number, volume, volume);
+  auto& system = Core::System::GetInstance();
+  system.GetSoundStream()->GetMixer()->SetGBAVolume(m_core_info.device_number, volume, volume);
   UpdateTitle();
 }