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The opening was unnecessarily sensational

I agree that Jim Austin's opening gambit was not needed:

"A couple of days ago, a friend invited me over to help him solve a problem with his system. He'd installed a new preamp and was getting a lot of AC hum. We traced the problem to the (balanced!) interconnects connecting the new preamp to his DAC; their stray capacitance and inadequate shielding made them an effective antenna for random, stray electrostatic fields—not what my friend was wanting to listen to just then. It gets worse. While both channels of the interconnect pair caused hum, one caused louder hum than the other (we'd switched channels to make sure). This demonstrated unacceptable quality control. Punch line: Those cables retail for $2500/pair."

Did not have a great deal to do with what followed.


Regards,
Geoff

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