Hello, I too recently treated myself to the same Muso 2 Wood finish.
With regards the putting to stand-by options - I have not tried the method you mention using the dial.
Within the naim app there is a ‘stand by’ button , plus therre also one the physical remote also.
In the ‘other settings’ menu there is a ‘auto standby’ menu with a choice of times - might be worth checking that the options chosen there is not in conflict e.g ‘never’ would seem likley to preclude going to standby.
Hope you find a solution which works for you, I am very happy with mine, and think wood finish is really gorgeous. Unit sounds fine too for my useage, will be interesting to see how it holds up when I eventually bring my various seperates back out of storgage.
i know the option via smartphone or the physical remote control.
however, i know from my former mu-so 2 devices and also written in the handbook itself, one can hold 3 seconds the play / pause button for standby.
in general, in comparison to my former devices, i feel that it is really really difficult to push the play / pause or back and forth button. i have to try it like 20x and maybe it works 1x out of it. where es my former devices: out of 20x trying, all of them would work without any issues.