diff --git a/ringrtc/rffi/BUILD.gn b/ringrtc/rffi/BUILD.gn
index 8052b39c18..341535b0fc 100644
--- a/ringrtc/rffi/BUILD.gn
+++ b/ringrtc/rffi/BUILD.gn
@@ -7,6 +7,7 @@ import("//webrtc.gni")
 
 # C++ source files common to all platforms
 common_sources = [
+  "src/audio_device.cc",
   "src/field_trial.cc",
   "src/injectable_network.cc",
   "src/logging.cc",
diff --git a/ringrtc/rffi/api/peer_connection_factory.h b/ringrtc/rffi/api/peer_connection_factory.h
index 9f48d151fa..5057b84585 100644
--- a/ringrtc/rffi/api/peer_connection_factory.h
+++ b/ringrtc/rffi/api/peer_connection_factory.h
@@ -81,6 +81,7 @@ enum class RffiPeerConnectionKind: uint8_t {
 enum RffiAudioDeviceModuleType {
   kRffiAudioDeviceModuleDefault = 0,
   kRffiAudioDeviceModuleFile = 1,
+  kRffiAudioDeviceModuleRingRtc = 2,
 };
 
 typedef struct {
diff --git a/ringrtc/rffi/src/audio_device.cc b/ringrtc/rffi/src/audio_device.cc
new file mode 100644
index 0000000000..bb1dab87e5
--- /dev/null
+++ b/ringrtc/rffi/src/audio_device.cc
@@ -0,0 +1,300 @@
+/*
+ * Copyright 2024 Signal Messenger, LLC
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+#include "rffi/src/audio_device.h"
+
+#include "api/make_ref_counted.h"
+#include "api/scoped_refptr.h"
+#include "rtc_base/logging.h"
+
+#define TRACE_LOG \
+  RTC_LOG(LS_VERBOSE) << "RingRTCAudioDeviceModule::" << __func__
+
+namespace webrtc {
+namespace rffi {
+
+RingRTCAudioDeviceModule::RingRTCAudioDeviceModule() = default;
+RingRTCAudioDeviceModule::~RingRTCAudioDeviceModule() = default;
+
+// static
+rtc::scoped_refptr<AudioDeviceModule> RingRTCAudioDeviceModule::Create() {
+  TRACE_LOG;
+  return rtc::make_ref_counted<RingRTCAudioDeviceModule>();
+}
+
+int32_t RingRTCAudioDeviceModule::ActiveAudioLayer(
+    AudioLayer* audioLayer) const {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::RegisterAudioCallback(
+    AudioTransport* audioCallback) {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::Init() {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::Terminate() {
+  TRACE_LOG;
+  return -1;
+}
+
+bool RingRTCAudioDeviceModule::Initialized() const {
+  TRACE_LOG;
+  return false;
+}
+
+int16_t RingRTCAudioDeviceModule::PlayoutDevices() {
+  TRACE_LOG;
+  return -1;
+}
+
+int16_t RingRTCAudioDeviceModule::RecordingDevices() {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::PlayoutDeviceName(
+    uint16_t index,
+    char name[kAdmMaxDeviceNameSize],
+    char guid[kAdmMaxGuidSize]) {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::RecordingDeviceName(
+    uint16_t index,
+    char name[kAdmMaxDeviceNameSize],
+    char guid[kAdmMaxGuidSize]) {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::SetPlayoutDevice(uint16_t index) {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::SetPlayoutDevice(WindowsDeviceType device) {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::SetRecordingDevice(uint16_t index) {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::SetRecordingDevice(WindowsDeviceType device) {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::PlayoutIsAvailable(bool* available) {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::InitPlayout() {
+  TRACE_LOG;
+  return -1;
+}
+
+bool RingRTCAudioDeviceModule::PlayoutIsInitialized() const {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::RecordingIsAvailable(bool* available) {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::InitRecording() {
+  TRACE_LOG;
+  return -1;
+}
+
+bool RingRTCAudioDeviceModule::RecordingIsInitialized() const {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::StartPlayout() {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::StopPlayout() {
+  TRACE_LOG;
+  return -1;
+}
+
+bool RingRTCAudioDeviceModule::Playing() const {
+  TRACE_LOG;
+  return false;
+}
+
+int32_t RingRTCAudioDeviceModule::StartRecording() {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::StopRecording() {
+  TRACE_LOG;
+  return -1;
+}
+
+bool RingRTCAudioDeviceModule::Recording() const {
+  TRACE_LOG;
+  return false;
+}
+
+int32_t RingRTCAudioDeviceModule::InitSpeaker() {
+  TRACE_LOG;
+  return -1;
+}
+
+bool RingRTCAudioDeviceModule::SpeakerIsInitialized() const {
+  TRACE_LOG;
+  return false;
+}
+
+int32_t RingRTCAudioDeviceModule::InitMicrophone() {
+  TRACE_LOG;
+  return -1;
+}
+
+bool RingRTCAudioDeviceModule::MicrophoneIsInitialized() const {
+  TRACE_LOG;
+  return false;
+}
+
+int32_t RingRTCAudioDeviceModule::SpeakerVolumeIsAvailable(bool* available) {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::SetSpeakerVolume(uint32_t volume) {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::SpeakerVolume(uint32_t* volume) const {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::MaxSpeakerVolume(uint32_t* maxVolume) const {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::MinSpeakerVolume(uint32_t* minVolume) const {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::MicrophoneVolumeIsAvailable(bool* available) {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::SetMicrophoneVolume(uint32_t volume) {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::MicrophoneVolume(uint32_t* volume) const {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::MaxMicrophoneVolume(
+    uint32_t* maxVolume) const {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::MinMicrophoneVolume(
+    uint32_t* minVolume) const {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::SpeakerMuteIsAvailable(bool* available) {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::SetSpeakerMute(bool enable) {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::SpeakerMute(bool* enabled) const {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::MicrophoneMuteIsAvailable(bool* available) {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::SetMicrophoneMute(bool enable) {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::MicrophoneMute(bool* enabled) const {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::StereoPlayoutIsAvailable(
+    bool* available) const {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::SetStereoPlayout(bool enable) {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::StereoPlayout(bool* enabled) const {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::StereoRecordingIsAvailable(
+    bool* available) const {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::SetStereoRecording(bool enable) {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::StereoRecording(bool* enabled) const {
+  TRACE_LOG;
+  return -1;
+}
+
+int32_t RingRTCAudioDeviceModule::PlayoutDelay(uint16_t* delayMS) const {
+  TRACE_LOG;
+  return -1;
+}
+
+}  // namespace rffi
+}  // namespace webrtc
diff --git a/ringrtc/rffi/src/audio_device.h b/ringrtc/rffi/src/audio_device.h
new file mode 100644
index 0000000000..ee4d7ce5db
--- /dev/null
+++ b/ringrtc/rffi/src/audio_device.h
@@ -0,0 +1,144 @@
+/*
+ * Copyright 2024 Signal Messenger, LLC
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+#ifndef RFFI_AUDIO_DEVICE_H__
+#define RFFI_AUDIO_DEVICE_H__
+
+#include <cstdint>
+
+#include "api/audio/audio_device.h"
+
+namespace webrtc {
+namespace rffi {
+
+/**
+ * RingRTC-specific ADM implementation, which forwards to Rust layer.
+ */
+class RingRTCAudioDeviceModule: public AudioDeviceModule {
+ public:
+  RingRTCAudioDeviceModule();
+  ~RingRTCAudioDeviceModule() override;
+
+  // Creates a default ADM for usage in production code.
+  static rtc::scoped_refptr<AudioDeviceModule> Create();
+
+  // Retrieve the currently utilized audio layer
+  int32_t ActiveAudioLayer(AudioLayer* audioLayer) const override;
+
+  // Full-duplex transportation of PCM audio
+  int32_t RegisterAudioCallback(AudioTransport* audioCallback) override;
+
+  // Main initialization and termination
+  int32_t Init() override;
+  int32_t Terminate() override;
+  bool Initialized() const override;
+
+  // Device enumeration
+  int16_t PlayoutDevices() override;
+  int16_t RecordingDevices() override;
+  int32_t PlayoutDeviceName(uint16_t index,
+                            char name[kAdmMaxDeviceNameSize],
+                            char guid[kAdmMaxGuidSize]) override;
+  int32_t RecordingDeviceName(uint16_t index,
+                              char name[kAdmMaxDeviceNameSize],
+                              char guid[kAdmMaxGuidSize]) override;
+
+  // Device selection
+  int32_t SetPlayoutDevice(uint16_t index) override;
+  int32_t SetPlayoutDevice(WindowsDeviceType device) override;
+  int32_t SetRecordingDevice(uint16_t index) override;
+  int32_t SetRecordingDevice(WindowsDeviceType device) override;
+
+  // Audio transport initialization
+  int32_t PlayoutIsAvailable(bool* available) override;
+  int32_t InitPlayout() override;
+  bool PlayoutIsInitialized() const override;
+  int32_t RecordingIsAvailable(bool* available) override;
+  int32_t InitRecording() override;
+  bool RecordingIsInitialized() const override;
+
+  // Audio transport control
+  int32_t StartPlayout() override;
+  int32_t StopPlayout() override;
+  bool Playing() const override;
+  int32_t StartRecording() override;
+  int32_t StopRecording() override;
+  bool Recording() const override;
+
+  // Audio mixer initialization
+  int32_t InitSpeaker() override;
+  bool SpeakerIsInitialized() const override;
+  int32_t InitMicrophone() override;
+  bool MicrophoneIsInitialized() const override;
+
+  // Speaker volume controls
+  int32_t SpeakerVolumeIsAvailable(bool* available) override;
+  int32_t SetSpeakerVolume(uint32_t volume) override;
+  int32_t SpeakerVolume(uint32_t* volume) const override;
+  int32_t MaxSpeakerVolume(uint32_t* maxVolume) const override;
+  int32_t MinSpeakerVolume(uint32_t* minVolume) const override;
+
+  // Microphone volume controls
+  int32_t MicrophoneVolumeIsAvailable(bool* available) override;
+  int32_t SetMicrophoneVolume(uint32_t volume) override;
+  int32_t MicrophoneVolume(uint32_t* volume) const override;
+  int32_t MaxMicrophoneVolume(uint32_t* maxVolume) const override;
+  int32_t MinMicrophoneVolume(uint32_t* minVolume) const override;
+
+  // Speaker mute control
+  int32_t SpeakerMuteIsAvailable(bool* available) override;
+  int32_t SetSpeakerMute(bool enable) override;
+  int32_t SpeakerMute(bool* enabled) const override;
+
+  // Microphone mute control
+  int32_t MicrophoneMuteIsAvailable(bool* available) override;
+  int32_t SetMicrophoneMute(bool enable) override;
+  int32_t MicrophoneMute(bool* enabled) const override;
+
+  // Stereo support
+  int32_t StereoPlayoutIsAvailable(bool* available) const override;
+  int32_t SetStereoPlayout(bool enable) override;
+  int32_t StereoPlayout(bool* enabled) const override;
+  int32_t StereoRecordingIsAvailable(bool* available) const override;
+  int32_t SetStereoRecording(bool enable) override;
+  int32_t StereoRecording(bool* enabled) const override;
+
+  // Playout delay
+  int32_t PlayoutDelay(uint16_t* delayMS) const override;
+
+  // Only supported on Android.
+  bool BuiltInAECIsAvailable() const override { return false; }
+  bool BuiltInAGCIsAvailable() const override { return false; }
+  bool BuiltInNSIsAvailable() const override { return false; }
+  // When using software AEC, use AECM instead of AEC3.
+  bool UseAecm() const override { return false; }
+
+  // Enables the built-in audio effects. Only supported on Android.
+  int32_t EnableBuiltInAEC(bool enable) override { return -1; }
+  int32_t EnableBuiltInAGC(bool enable) override { return -1; }
+  int32_t EnableBuiltInNS(bool enable) override { return -1; }
+
+  // Play underrun count. Only supported on Android.
+  int32_t GetPlayoutUnderrunCount() const override { return -1; }
+
+  // Used to generate RTC stats. If not implemented, RTCAudioPlayoutStats will
+  // not be present in the stats.
+  absl::optional<Stats> GetStats() const override { return absl::nullopt; }
+
+// Only supported on iOS.
+#if defined(WEBRTC_IOS)
+  int GetPlayoutAudioParameters(AudioParameters* params) const override {
+    return -1;
+  }
+  int GetRecordAudioParameters(AudioParameters* params) const override {
+    return -1;
+  }
+#endif  // WEBRTC_IOS
+};
+
+} // namespace rffi
+} // namespace webrtc
+
+#endif  // RFFI_AUDIO_DEVICE_H__
diff --git a/ringrtc/rffi/src/peer_connection_factory.cc b/ringrtc/rffi/src/peer_connection_factory.cc
index 1a8032b505..fcfc46a3b6 100644
--- a/ringrtc/rffi/src/peer_connection_factory.cc
+++ b/ringrtc/rffi/src/peer_connection_factory.cc
@@ -25,6 +25,7 @@
 #include "rffi/api/peer_connection_factory.h"
 #include "rffi/api/peer_connection_observer_intf.h"
 #include "rffi/api/injectable_network.h"
+#include "rffi/src/audio_device.h"
 #include "rffi/src/peer_connection_observer.h"
 #include "rffi/src/ptr.h"
 #include "rtc_base/logging.h"
@@ -146,6 +147,8 @@ class PeerConnectionFactoryWithOwnedThreads
 #endif
         return AudioDeviceModule::Create(
           AudioDeviceModule::kPlatformDefaultAudio, dependencies.task_queue_factory.get());
+      case kRffiAudioDeviceModuleRingRtc:
+        return RingRTCAudioDeviceModule::Create();
       }
     });