diff --git a/Lib.Audio/Factories/IControllableFactory.cs b/Lib.Audio/Factories/IControllableFactory.cs
index bc07f70..4d805d0 100644
--- a/Lib.Audio/Factories/IControllableFactory.cs
+++ b/Lib.Audio/Factories/IControllableFactory.cs
@@ -2,6 +2,7 @@
 // Created: 2021-04-08
 // Copyright(c) 2021 SimonG. All Rights Reserved.
 
+using System.Collections.Generic;
 using Lib.Audio.Interfaces;
 using NAudio.CoreAudioApi;
 
@@ -9,6 +10,7 @@ namespace Lib.Audio.Factories
 {
     public interface IControllableFactory
     {
-        IControllable Create(AudioSessionControl audioSessionControl, string name);
+        IControllable Create(List<AudioSessionControl> audioSessionControls, string name);
+        IMasterControllable Create(AudioEndpointVolume audioEndpointVolume, string name);
     }
 }
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