diff --git a/src/AudioUnit/AUEnums.cs b/src/AudioUnit/AUEnums.cs
index c73de123c9a0..7157cc1ddac8 100644
--- a/src/AudioUnit/AUEnums.cs
+++ b/src/AudioUnit/AUEnums.cs
@@ -33,6 +33,7 @@
 using System.Collections.Generic;
 using System.Text;
 using System.Runtime.InteropServices;
+using System.Runtime.Versioning;
 using System.Threading;
 using AudioToolbox;
 using ObjCRuntime;
@@ -189,7 +190,20 @@ public enum AudioObjectPropertySelector : uint
 		TranslateUIDToBox = 1969841250, // 'uidb'
 		ClockDeviceList = 1668049699, //'clk#'
 		TranslateUidToClockDevice = 1969841251, // 'uidc',
+		[Deprecated (PlatformName.iOS, 15,0, message : "Use the 'ProcessIsMain' element instead.")]
+		[Deprecated (PlatformName.MacCatalyst, 15,0, message : "Use the 'ProcessIsMain' element instead.")]
+		[Deprecated (PlatformName.MacOSX, 12,0, message : "Use the 'ProcessIsMain' element instead.")]
+		[Obsolete ("Use the 'ProcessIsMain' element instead.")]
 		ProcessIsMaster = 1835103092, // 'mast'
+#if !NET
+		[iOS (15,0), MacCatalyst (15,0), Mac (12,0), NoTV, NoWatch]
+#else
+		[SupportedOSPlatform ("ios15.0")]
+		[SupportedOSPlatform ("maccatalyst15.0")]
+		[SupportedOSPlatform ("macos12.0")]
+		[UnsupportedOSPlatform ("tvos")]
+#endif
+		ProcessIsMain = 1835100526, // 'main'
 		IsInitingOrExiting = 1768845172, // 'inot'
 		UserIDChanged = 1702193508, // 'euid'
 		ProcessIsAudible = 1886221684, // 'pmut'
@@ -202,6 +216,15 @@ public enum AudioObjectPropertySelector : uint
 		ActualSampleRate = 1634955892,// 'asrt',
 		ClockDevice = 1634755428, // 'apcd',
 		IOThreadOSWorkgroup = 1869838183, // 'oswg'
+#if !NET
+		[iOS (15,0), MacCatalyst (15,0), Mac (12,0), NoTV, NoWatch]
+#else
+		[SupportedOSPlatform ("ios15.0")]
+		[SupportedOSPlatform ("maccatalyst15.0")]
+		[SupportedOSPlatform ("macos12.0")]
+		[UnsupportedOSPlatform ("tvos")]
+#endif
+		ProcessMute = 1634758765, // 'appm'
 	}
 
 	public enum AudioObjectPropertyScope : uint
@@ -214,7 +237,11 @@ public enum AudioObjectPropertyScope : uint
 
 	public enum AudioObjectPropertyElement : uint
 	{
+#if !XAMCORE_4_0
+		[Obsolete ("Use the 'Main' element instead.")]
 		Master = 0, // 0
+#endif
+		Main = 0, // 0
 	}
 #endif // !XAMCORE_3_0 || MONOMAC
 
diff --git a/src/AudioUnit/AudioUnit.cs b/src/AudioUnit/AudioUnit.cs
index 17923805b527..6fd5a59d964b 100644
--- a/src/AudioUnit/AudioUnit.cs
+++ b/src/AudioUnit/AudioUnit.cs
@@ -38,6 +38,7 @@
 using ObjCRuntime;
 using CoreFoundation;
 using Foundation;
+using System.Runtime.Versioning;
 
 namespace AudioUnit
 {
@@ -389,10 +390,15 @@ public uint GetCurrentDevice (AudioUnitScopeType scope, uint audioUnitElement =
 #if !XAMCORE_3_0 || MONOMAC
 #if !MONOMAC
 		[Obsolete ("This API is not available on iOS.")]
+#endif
+#if NET
+		[SupportedOSPlatform ("maccatalyst15.0")]
+#else
+		[MacCatalyst (15,0)]
 #endif
 		public static uint GetCurrentInputDevice ()
 		{
-#if MONOMAC
+#if MONOMAC || __MACCATALYST__
 			// We need to replace AudioHardwareGetProperty since it has been deprecated since OS X 10.6 and iOS 2.0
 			// Replacing with the following implementation recommended in the following doc
 			// See Listing 4  New - Getting the default input device.
@@ -403,7 +409,7 @@ public static uint GetCurrentInputDevice ()
 			var theAddress = new AudioObjectPropertyAddress (
 				AudioObjectPropertySelector.DefaultInputDevice,
 				AudioObjectPropertyScope.Global,
-				AudioObjectPropertyElement.Master);
+				AudioObjectPropertyElement.Main);
 			uint inQualifierDataSize = 0;
 			IntPtr inQualifierData = IntPtr.Zero;
 
@@ -864,7 +870,12 @@ static extern AudioUnitStatus AudioUnitSetParameter (IntPtr inUnit, AudioUnitPar
 		[DllImport (Constants.AudioUnitLibrary)]
 		static extern AudioUnitStatus AudioUnitScheduleParameters (IntPtr inUnit, AudioUnitParameterEvent inParameterEvent, uint inNumParamEvents);
 
-#if MONOMAC
+#if MONOMAC || __MACCATALYST__
+#if !NET
+		[MacCatalyst (15,0)]
+#else
+		[SupportedOSPlatform ("maccatalyst15.0")]
+#endif
 		[DllImport (Constants.AudioUnitLibrary)]
 		static extern int AudioObjectGetPropertyData (
 			uint inObjectID,
diff --git a/tests/xtro-sharpie/MacCatalyst-CoreAudio.todo b/tests/xtro-sharpie/MacCatalyst-CoreAudio.ignore
similarity index 96%
rename from tests/xtro-sharpie/MacCatalyst-CoreAudio.todo
rename to tests/xtro-sharpie/MacCatalyst-CoreAudio.ignore
index f0153f063bac..51da5b923286 100644
--- a/tests/xtro-sharpie/MacCatalyst-CoreAudio.todo
+++ b/tests/xtro-sharpie/MacCatalyst-CoreAudio.ignore
@@ -21,7 +21,6 @@
 !missing-pinvoke! AudioHardwareUnload is not bound
 !missing-pinvoke! AudioObjectAddPropertyListener is not bound
 !missing-pinvoke! AudioObjectAddPropertyListenerBlock is not bound
-!missing-pinvoke! AudioObjectGetPropertyData is not bound
 !missing-pinvoke! AudioObjectGetPropertyDataSize is not bound
 !missing-pinvoke! AudioObjectHasProperty is not bound
 !missing-pinvoke! AudioObjectIsPropertySettable is not bound