Measuring line noise and power conditioners

My point to all of this is that cleaning up AC noise in the audio frequencies is as important or more than RFI. We should be looking at devices and measurements which clean up both.

Think of most power conditioners as essentially filters, much like the crossovers in a speaker.  Signal comes in, some passes, some gets blocked. The ideal power conditioner (as opposed to a regenerator) passes 60 Hz (or 50 depending where you are) and blocks all others.  RFI filters are low pass filters.  If you can go lower, and start at 3-10 kHz that's better than starting at 100 kHz.

Notice I'm not talking about any brands you may like or not like.  I'm just stating principles.

@erik_squires ,

In your recent responses, you say RFI. We are referring to EMI.

What I hear ain't luck. Having a device that can measure what I hear ain't luck.

In your recent responses, you say RFI. We are referring to EMI.

My bad.

What I hear ain't luck. Having a device that can measure what I hear ain't luck.

Coincidence and bias are real, which doesn't mean you haven't done enough experimentation to eliminate them, they are just the first to things to eliminate before claiming more.

@tvad ,

That's really high my friend. Mine on either dedicated line is now measuring around 220.
When you achieve a lower level, you will be surprised at the increase in SQ.