AE900 Standby Noise

[T800]

When I got my AE300 it used to make a very low volume high pitched noise when left it on standby and could only get rid of it by turning it off. After time I either got used to it or it stopped.
I've just got an AE900 and it's doing the same, it's mounted about 5 foot above my head. I can't hear it straight away but if can't sleep it become really obvious and can only stop it by turning the power off.

Has any one else experienced this ?
Can it be stopped other than turning the power off ?

Thanks

[PJTX100]

I would suggest it's good practice to turn the power off anyway. Certainly with the 700 there were many reports that it helped to reduce VB.

[T800]

Will it make much difference if I turn it off via the switch or at the plug (it's easier at the plug) ?

[PJTX100]

Would've thought the plug should be fine.