I dont know man but just the fact that they took out the internal amp and now its 18 watts rms instead of 26 watts rms is not a good thing. And the whole touch glide system to me sounds like its just gonna break easily. I have had the 9835 for a while now and I think its amazing. There is a guy who has a clip of the 9853 in action http://realmofexcursion.com/videos.html just go down to the various section. And to me it looks pretty stupid.