The cleaning feature was dropped, mainly because while a few customers found it useful, Naim found that most never used it or found it confusing. Naim decided to instead focus on developing more useful features. If you want to clean the UI top, just switch it off, wipe it down, then switch back on again.
I would like to complain that when I activated my Mu-so’s cleaning mode and left it on all day, it was no cleaner at the end of the day than it was at the beginning. What gives?
I do the dusting thanks very much, I can get by turning it off at the wall. If I could lock the top panel to stop small hands fiddling with it that would be handy!