Lowering the noise floor

In all seriousness, the greatest contributor to the noise floor of your system just might be the refrigerator in your kitchen when its compressor is running.  In my old rental house, I would unplug that janky fridge for listening sessions... right up until my wife found melted ice cream in the freezer.  Now we've got an LG that's whisper-quiet.

Likewise, your HVAC system, when circulating air through its vents, could be an order of magnitude noisier than your power supply.  

It’s Interesting and not terribly surprising how pervasive ignorance is among audiophiles on the dodgy subject of cryogenics. I realize how hard it must be to break out of the paradigms of the 70s and 80s. It’s like trying to get an electron to move to the next higher energy orbit. In fact, cryogenics itself improves SNR of all wire, including cables, fuses, transformers, inductors, power cords, wall outlets, what have you. It improves SNR by improving conductivity. This is why most high end cable manufacturers routinely employ cryogenics for their products. Because they know they cannot compete in the marketplace unless they do. Duh! 😛 It’s also why you see some (enlightened) manufacturers like Tannoy and Meitner employ cryogenics for their electronics. For digital gear reducing vibration means, you guessed it, improving SNR by reducing jitter. I.e., reducing noise. For structural or mechanical elements such as tonearms, racks, nuts and bolts, turntable platters and even LPs and CDs, cryogenics improves the strength and reduces brittleness, make them less prone to vibration. As I said, everything should be cryo’d. ⛄️

willemj

No it is not. FM has serious limitations, even if internet radio has as well,

Most of FM's "serious limitations" aren't inherent - they exist because of the execution. Internet radio is much the same. That’s why it’s silly to argue that:

there is nothing really you can do to get it close to the quality that can now be achieved by e.g. internet radio.

There’s no argument that Internet radio can sound very, very good, btw.

You can do wonders with spread spectrum communications. Noise disappears out of the equation. 

Some reading material: https://www.quora.com/How-does-the-sound-quality-of-a-same-song-broadcasted-on-FM-Radio-compare-to-M...