Hi, first off love my new MINI (950 miles so far)...LOVE it!! However there is a faint but very high pitched sound coming from my speakers even when the radio is off. It's not constant and happens often and is noticable and annoying. Any ideas or suggestions? 

5th Gear
Process of elimination to start? Nothing electronic plugged into any of its 12v ports. And, nothing electronic on your person, in your bag/case etc. or in/near the car? Still have the noise?
Nothing electric plugged in, no personal electronic devices in MINI. It is very faint high pitched noise, sort of lole electrical distortion. Mysterious.... Annoying and happens even if radio is off.
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