Is a twisted pair conductor intrinsically succeptible to thermal noise?
The noise density of 62 ohms is 1 nanoVolt/rootHertz.
The noise density of 62/1,00,000 ohms is 1 picoVolt/rootHertz.
That is about the noise of an inch of wire.
Of course the bandwidth is very high.
You will need to add low_pass_filters downstream.