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In Reply to: RE: Here you go! posted by gusser on July 21, 2023 at 10:11:53
I'm happy to have a conversation using actual quoted content.
Follow Ups:
Here you go:
Yes, Virginia all of the cheap switch mode power supplies I've used blur musical detail. Comparisons were easily conducted since all you need do is swap out the power supply.
I've also posted on numerous occasions that it is not a matter of obvious radio "bleed through". The noise/interference merely masks musical detail.
"Yes, Virginia all of the cheap switch mode power supplies I've used blur musical detail. Comparisons were easily conducted since all you need do is swap out the power supply."
Yes that is quite possible for switch mode power supplies where DACs are in the same enclosure and.or being power from them. But my studio DACs use a switch mode power supply and I don't see any significant noise on the analog outputs. That being with scope measurements.
I have an RF spectrum analyzer that can tune into the SMPS area 50khz to 1mhz. Perhaps I should take another look but will most likely be "down in the grass".
"context"?
Do you understand what it means?
With respect to your assertion about a $99 Wiim Mini matching the audio quality of the best streamers available, we're talking about a five buck switcher.
Where did I assert anything about the Wiim Mini? I dont even know about it. You posted comments and your observations with switch mode power supplies.
I outlined where your comments and observations could occur.
What I didn't say and I'll say it here, There is no way an CE/FCC certified Ethernet switch SMPS is going to induce noise into a receiving device.
These Ethernet isolators are a pure scam. Ethernet is transformer coupled by specification. And there is no ground connection within the cable pairs.
Where did I assert anything about the Wiim Mini? I dont even know about it.
That's voolson's reference for CDs sounding better than streaming to which you agreed. So much for context. Again.
There is no way an CE/FCC certified Ethernet switch SMPS is going to induce noise into a receiving device.
The topic is digital streamers.
These Ethernet isolators are a pure scam. Ethernet is transformer coupled by specification.
And yet, the medical industry uses them for patients getting attached to computerized devices for galvanic isolation!
Network isolators in medical technology
Aftermarket power conditioning is also used in fine electrophysiology measurement equipment for lowering noise floor. Don't tell me, don't tell me. Dr. Daniel Melby is a liar too, right?
View YouTube Video
Those Ethernet isolators are for patient attached electrical devices. The codes are very strict for obvious reasons. While Ethernet is transformer isolated inside the unit, its still connected to a unit before being isolated. Leakage current can still occur. That is a strict limit way below digital audio standards.
As for your Dr. video, that's about noise on analog signals and power conditioning. That has no relevance to SPDIF audio cables or transports.
And the Shuynata video, those people have no professional credibility in Electrical Engineering. If I am incorrect, show it to me.
Leakage current can still occur.
No $hit! Noise is noise.
And the Shuynata video, those people have no professional credibility in Electrical Engineering.
Doctors working at major hospitals measuring noise levels with their SOTA medical gear have "no professional credibility"?
You're really desperate attempting to support your non-experience. ;)
This has been dissected years ago.None of those so called medical products by Shunyata have UL60601 certification. No hospital, clinic, doctors office is going to buy that equipment without it.
Just think about it. A patient is hurt or killed by electrical shock and they find non listed electrical gear in use. How much of a settlement is that going to result in? Doesn't matter if the Shunyata gear was at fault or not. They broke the rules and they will be liable.
Now name a medical malpractice insurance company that will extend a medical facility liability insurance policy based on that.
Not gonna happen. Shunyata is just more BS after BS!
Edits: 07/21/23 07/21/23 07/21/23
Now name a medical malpractice insurance company that will extend a medical facility liability insurance policy based on that.Whatever Abbott Northwestern Hospital in Minneapolis uses.
Click here for their website.
I'm signing out of your circus. Have a great weekend!
Edits: 07/21/23
Well I thought I might remind the good Dr. in your posted video about UL60601 and to check with his legal department if he is indeed using the suggested products in patient applications.
Well what do you know! The video is blocked for comments. I clicked around a few more Shunyata videos and found the same restriction.
Very telling, let's block any discussion on the merits of these products.
I must say Paul and PS Audio also delve into some of this audiophile snake oil. But at least Paul allows contradicting comments, some quite negative provided it doesn't get personal.
Now that I do respect! One sided discussion on a public venue I do not!
What does that tell us? Of course an established hospital has a WEB site!Show me the UL60601 file on the equipment sold.
I am not going to doubt that Shunyata may have experimented there after hours as some high paid doctor may use their products at home. But this is a highly regulated industry. Shunyata just hopes most audiophiles don;t know that. Just like they bet on audiophiles not understanding how wire gauge can skew a demonstration in their favor.
And by the way, I don't fully understand those medical waveforms but based on my electronics knowledge and using scopes for 40 years, those are not the same images. Where the noise is gone, so are the repetitive higher level pulses. Noise is random. The pulses are not yet they are gone in the second image? And quite obvious the color of the traces changes between images? Why? Something's not right here.
Edits: 07/21/23
I'm going a little off topic here but one of the funniest bits of snake oil I've seen was an Ad in Stereophile for a high-end speaker cable brand that were supposedly 'fast' as to not hinder the signal.The Ad pictured a dual-trace oscilloscope screen with a square wave input signal and output signal trace, one on top of the other for easy comparison. The funny part is that it showed the output signal square wave arriving BEFORE the input signal. Now that's freakn' fast!
Edits: 07/23/23 07/23/23
I'd call them Quantum Entangled Cables to account for the negative time delay.
Gsquared
Why not given the bullshit that already sells?
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