[Radio Wrangler]

Doing measurements at RF shows you that cable losses, matching effects etc get progressively worse with increasing frequency.

Doing intermodulation tests, looking for products peeping above noise floors around -145dBm showed that cables were fine, but you could spot grotty connections and cheapo connectors.

Measuring the noise figures of low noise (NF<1dB) RF systems is dramatically more sensitive to RF ingress than audio circuitry is to RF ingress.

So, take all these frequency dependent effects and extrapolate their curves down to audible frequencies and they were lost in noise long before you got there.

The non-linearity/intermod effacts aren't really frequency dependent, but they can easily be made very small and don't get worse at lower frequencies.

The problem with believing that your ears have limitless acuity is that there is therefore nothing so small that you don't have to believe you can hear. Even imaginary things.

History is rife with famously shouty dictators, loud bombs, meteor strikes etc. and as soundwaves decay asymptotically, some of the energy is still there, reflecting around, circling the Earth and suffering severe attenuation and multipath. I'm surprised people don't complain about the echoes of nuke testing, dinosaur fights and Henry VIII.

David