[Elecraft] Audio Amplifiers without Pin One Grounding issue for us with the K3

[Jim Brown]

On 1/10/2014 6:59 PM, Robert Nobis wrote:
> I also use my K3 to listen to SW broadcasts and am looking for an audio
> amplifier that is immune to RFI and does not have the pin one grounding
> issue for the input/output connectors. I prefer something in the range of
> 10 to 25-watts of power to drive my speakers. Does anyone have any
> recommendations?

I wish I had better news, but most consumer products have "the pin one 
problem." It's also common for RF to be coupled on loudspeaker wiring. 
The RF side of this can be solved with ferrite chokes on cables 
connected to vulnerable equipment.  Twisted pair loudspeaker wiring also 
helps that part of the problem.

73, Jim K9YC