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Re: OT: an unpleasant buzz



Zoe,
don't know if you tried that, but if you are using your sound card 
connected to a laptop, it could easily be its ground not properly 
"grounded".

I found that most of the laptops ( at least ALL the ones I've had) need 
to run on batteries to avoid that 60 Hz hum.
The solution I took is the second one: to disconnect earth pin on the 
power plug.
It may be risky sometimes but it's the only way if you need to keep it 
on for a long time.

I am sorry if I have been going out of the path or giving an already 
given reply.

best luck,
luca