Higher End DACs

I didn’t find where the White Paper discussed RF coming in through the windows. Maybe I missed it. But RF comes in from outside, all kinds of it, where it can easily migrate into unused wall outlets, unused input and output jacks of electronics, holes in electronics, and into unshielded cabling. The entire room is lit up like a Christmas tree. 🎄 As I stated earlier the first line of defense should be the windows. And the unused wall outlets the second line of defense. 

Why does my cell phone work in a windowless room ????

Glass is more transparent to RF but photons can travel through solid building structures, too. Like a knife through butter 🧈  Elevators (metal) not so much. That’s why reception improves as you move toward the window in many cases. Depends on where the signal is coming from, etc. Sometimes 24” can make all the difference.

I'm going to start my own thread on RF isolation of DACs. It's a topic whose time has come. It good to be pragmatic but it's also good to accept new ideas. Understanding is the first step toward a full resolution.