Lowering the noise floor

I hate to jump to conclusions but it certainly appears I’ve completely avoided a huge amount of RFI/EMI interference of ALL frequencies from 0 Hz to umpty ump GHz by completely circumventing the house AC. I’ve also completely avoided all magnetic interference produced by transformers and by current running through wire and cables. I’ve also circumvented all issues related to power cords, fuses, interconnects, large capacitors, digital cables and speaker cables, including directionality issues. I’ve also circumvented ALL issues related to room acoustics. AND I’ve avoided the costs associated with dealing with all of those issues. I’m a big believer in cost avoidance. AND reducing the Audio Nervosa Quotient as much as possible. 🤪 I don’t like tips of icebergs and I don’t like icebergs.

What, you mean you've avoided all that by going cryo?? Not sure I get the drift here...forgive me if I'm a little slow today...battery powered headphone set up?? 

If it Is a battery powered headphone setup we’re talking about, then except for cost and audio nervosa, I’d say that you have not **completely** (to use your word) avoided all the noise issues. There is the noise from the components themselves at the very least, just for example. I’m not saying that you **have** to solve it this way, just that you could make gains with it if you wanted to. Nor am I saying that the approaches that you’ve used, or that others use generally, are somehow invalid...just that there are usually other ways to skin the audio cat (I prefer to just swing them around). From what I understand, cryo’d wire measures lower in EMR than the same untreated wire, in effect lowering resistance and increasing power efficiency.

But, as far as the icebergs go, I can only offer that you try and relax and just enjoy the cruise while it lasts. If you’re looking to guarantee smooth sailing, I’d say that you’re likely in the wrong hobby. In case you haven’t noticed, there are rather a lot of icebergs all around at any given time anyway. I’d say that we are all on that same Titanic ya know, whether we are into rearranging the deck chairs or not.

Cheers

I never said I eliminated all noise. What I said or at least intended to say is I eliminated all RFI/EMI type noise produced or carried by the house AC, cables, fuses, power cords, AND all magnetic type noise produced by transformers (induced magnetic field) and the induced magnetic fields inherently produced by current traveling through cables and wire. And no GROUND issues. I thought I was pretty clear. Furthermore, by minimizing the player itself, which is a portable player, noise and distortion produced by the player itself is obviously MINIMIZED, e.g. NO BIG TRANSFORMER. NO FUSE. NO BIG CAPACITORS. Capish?

I think I understand what you’re saying with the magnetic type noise (mu metal, yes??) and also the minimized player. It’s the "...all RFI/EMI type produced or carried by the house AC, cables, fuses, power cords..." part that’s confusing me...not sure what method of noise removal here you are referring to??