It's actually an early DC version I worked over. As is my other Mike. Can't say enough good about them. Won't ever see a BLI on my layout after the fiasco with the T! that I have to replace the fried decoder in, already. On another note, got the machine work done on the engine frame of the 844 for the wiring, and got it loosened up in the tender, too. Much better, though it is a finicky thing yet. More little tweaks, I am sure. The foam holding the speaker in was causing binding also, so I relocated the speaker aft and put the decoder forward.