diff --git a/src/NTwain/TransferReadyEventArgs.cs b/src/NTwain/TransferReadyEventArgs.cs
index 9b88486..b7b4120 100644
--- a/src/NTwain/TransferReadyEventArgs.cs
+++ b/src/NTwain/TransferReadyEventArgs.cs
@@ -3,76 +3,88 @@ using System;
 
 namespace NTwain
 {
-  /// <summary>
-  /// Contains event data when a data transfer is ready to be processed.
-  /// </summary>
-  public class TransferReadyEventArgs : EventArgs
-  {
-    public TransferReadyEventArgs(int pendingCount, TWEJ endOfJobFlag)
+    /// <summary>
+    /// Contains event data when a data transfer is ready to be processed.
+    /// </summary>
+    public class TransferReadyEventArgs : EventArgs
     {
-      //_twain = twain;
-      PendingCount = pendingCount;
-      EndOfJobFlag = endOfJobFlag;
+        public TransferReadyEventArgs(TWSX imgXferMech, TWSX audXferMech, int pendingCount, TWEJ endOfJobFlag)
+        {
+            ImgXferMech = imgXferMech;
+            AudXferMech = audXferMech;
+            //_twain = twain;
+            PendingCount = pendingCount;
+            EndOfJobFlag = endOfJobFlag;
+        }
+
+        /// <summary>
+        /// Gets or sets whether to cancel the capture phase.
+        /// </summary>
+        public CancelType Cancel { get; set; }
+
+        /// <summary>
+        /// Gets the end of job flag value for this transfer if job control is enabled.
+        /// </summary>
+        public TWEJ EndOfJobFlag { get; }
+
+        /// <summary>
+        /// Gets the current transfer mech if working with images.
+        /// </summary>
+        public TWSX ImgXferMech { get; }
+
+        /// <summary>
+        /// Gets the current transfer mech if working with audio.
+        /// </summary>
+        public TWSX AudXferMech { get; }
+
+        /// <summary>
+        /// Gets the known pending transfer count. This may not be appilicable 
+        /// for certain scanning modes.
+        /// </summary>
+        public int PendingCount { get; private set; }
+
+        //TW_IMAGEINFO? _imgInfo;
+        //private readonly TwainAppSession _twain;
+
+        ///// <summary>
+        ///// Gets the tentative image information for the current transfer if applicable.
+        ///// This may differ from the final image depending on the transfer mode used (mostly when doing mem xfer).
+        ///// </summary>
+        //public TW_IMAGEINFO? PendingImageInfo
+        //{
+        //  get
+        //  {
+        //    // only get it if requested since it could be slow
+        //    if (!_imgInfo.HasValue)
+        //    {
+        //      if (_twain.GetImageInfo(out TW_IMAGEINFO info).RC == TWRC.SUCCESS)
+        //      {
+        //        _imgInfo = info;
+        //      }
+        //    }
+        //    return _imgInfo;
+        //  }
+        //}
+
     }
 
-    /// <summary>
-    /// Gets or sets whether to cancel the capture phase.
-    /// </summary>
-    public CancelType Cancel { get; set; }
-
-    /// <summary>
-    /// Gets the end of job flag value for this transfer if job control is enabled.
-    /// </summary>
-    public TWEJ EndOfJobFlag { get; private set; }
-
-    /// <summary>
-    /// Gets the known pending transfer count. This may not be appilicable 
-    /// for certain scanning modes.
-    /// </summary>
-    public int PendingCount { get; private set; }
-
-    //TW_IMAGEINFO? _imgInfo;
-    //private readonly TwainAppSession _twain;
-
-    ///// <summary>
-    ///// Gets the tentative image information for the current transfer if applicable.
-    ///// This may differ from the final image depending on the transfer mode used (mostly when doing mem xfer).
-    ///// </summary>
-    //public TW_IMAGEINFO? PendingImageInfo
-    //{
-    //  get
-    //  {
-    //    // only get it if requested since it could be slow
-    //    if (!_imgInfo.HasValue)
-    //    {
-    //      if (_twain.GetImageInfo(out TW_IMAGEINFO info).RC == TWRC.SUCCESS)
-    //      {
-    //        _imgInfo = info;
-    //      }
-    //    }
-    //    return _imgInfo;
-    //  }
-    //}
-
-  }
-
-  public enum CancelType
-  {
-    /// <summary>
-    /// No cancel.
-    /// </summary>
-    None,
-    /// <summary>
-    /// Skips current transfer.
-    /// </summary>
-    SkipCurrent,
-    /// <summary>
-    /// Stops feeder but continue receiving already scanned images in the app.
-    /// </summary>
-    Graceful,
-    /// <summary>
-    /// Stops feeder and discard any pending images.
-    /// </summary>
-    EndNow
-  }
+    public enum CancelType
+    {
+        /// <summary>
+        /// No cancel.
+        /// </summary>
+        None,
+        /// <summary>
+        /// Skips current transfer.
+        /// </summary>
+        SkipCurrent,
+        /// <summary>
+        /// Stops feeder but continue receiving already scanned images in the app.
+        /// </summary>
+        Graceful,
+        /// <summary>
+        /// Stops feeder and discard any pending images.
+        /// </summary>
+        EndNow
+    }
 }
diff --git a/src/NTwain/TwainAppSession.Xfers.cs b/src/NTwain/TwainAppSession.Xfers.cs
index b7b008b..05437f4 100644
--- a/src/NTwain/TwainAppSession.Xfers.cs
+++ b/src/NTwain/TwainAppSession.Xfers.cs
@@ -66,7 +66,7 @@ namespace NTwain
             {
                 do
                 {
-                    var readyArgs = new TransferReadyEventArgs(pending.Count, (TWEJ)pending.EOJ);
+                    var readyArgs = new TransferReadyEventArgs(imgXferMech, audXferMech, pending.Count, (TWEJ)pending.EOJ);
                     try
                     {
                         TransferReady?.Invoke(this, readyArgs);