diff --git a/MP4/box_mp4a.cpp b/MP4/box_mp4a.cpp
new file mode 100644
index 00000000..b3310fdb
--- /dev/null
+++ b/MP4/box_mp4a.cpp
@@ -0,0 +1,39 @@
+#include "box_mp4a.h"
+
+Box_mp4a::Box_mp4a( ) {
+  Container = new Box( 0x6D703461 );
+  SetReserved();
+  SetDefaults();
+}
+
+Box_mp4a::~Box_mp4a() {
+  delete Container;
+}
+
+Box * Box_mp4a::GetBox() {
+  return Container;
+}
+
+void Box_mp4a::SetDataReferenceIndex( uint16_t DataReferenceIndex ) {
+  Container->SetPayload((uint32_t)2,Box::uint16_to_uint8( DataReferenceIndex ),6);
+}
+
+void Box_mp4a::SetChannelCount( uint16_t Count ) {
+  Container->SetPayload((uint32_t)2,Box::uint16_to_uint8( Count ),16);
+}
+
+void Box_mp4a::SetSampleSize( uint16_t Size ) {
+  Container->SetPayload((uint32_t)2,Box::uint16_to_uint8( Size ),18);
+}
+
+void Box_mp4a::SetReserved( ) {
+  Container->SetPayload((uint32_t)4,Box::uint32_to_uint8( 0 ),20);
+  Container->SetPayload((uint32_t)2,Box::uint16_to_uint8( 0 ),4);
+  Container->SetPayload((uint32_t)4,Box::uint32_to_uint8( 0 ));
+}
+
+void Box_mp4a::SetDefaults( ) {
+  SetSampleSize( );
+  SetChannelCount( );
+  SetDataReferenceIndex( );
+}
diff --git a/MP4/box_mp4a.h b/MP4/box_mp4a.h
new file mode 100644
index 00000000..850cf654
--- /dev/null
+++ b/MP4/box_mp4a.h
@@ -0,0 +1,18 @@
+#include "box.h"
+#include <string>
+
+class Box_mp4a {
+  public:
+    Box_mp4a( );
+    ~Box_mp4a();
+    Box * GetBox();
+    void SetDataReferenceIndex( uint16_t DataReferenceIndex = 0);
+    void SetChannelCount( uint16_t Count = 2 );
+    void SetSampleSize( uint16_t Size = 16 );
+  private:
+    Box * Container;
+
+    void SetReserved( );
+    void SetDefaults( );
+};//Box_ftyp Class
+