[Elecraft] Strange K3S/0 Mini Noise

[Mike Murray]

Since starting to use my K3/0 I've been bugged by a "buzz" coming from the
speakers that I haven't been able to identify.  Turning the volume up
overrides the noise, but it's still there.  I've tried 3 different power
supplies with no change, including the one supplied by Elecraft.  Here's a
recording of what I'm hearing:

https://dl.dropboxusercontent.com/u/19721057/Files/Voice%20004.m4a

If anyone has any insight about what to try differently, I'd certainly
appreciate hearing it.

73,
Mike - W0AG