I just know that if UPS or FedEx made a switch, it would drop packets.

@RedSinter

2 жыл бұрын

Ahahahahahaha ahahahahahaha Ahahahahahaha

@alecgrolimond1678

Жыл бұрын

Good one.

Anyone who understand networking would tell you that audiophile network cables or routers are completely scam. Great job Amir

It's so awesome that you're making KZread videos. Happy to see you here!

@AudioScienceReview

3 жыл бұрын

A pleasure to be here. Thanks for the welcome!

@DBTAudio

4 ай бұрын

@@AudioScienceReviewIs there a need for a switch if you have the ability to connect directly from your router to your music streamer?

Welcome to the KZread community Amir!

@AudioScienceReview

3 жыл бұрын

Thanks for the support Fomo.

Awesome work! Congrats and keep them coming, it is pure gold Amir!

@AudioScienceReview

3 жыл бұрын

Much appreciated.

Great that you are on KZread! Very clear explanations. Easy to follow. Please also make some beginner explanations for reading those audio graphs

@AudioScienceReview

3 жыл бұрын

I have one planned. It will be a long one though so have to figure out how to best get it done without people dropping out half way through the video. :)

@kaitonbuitendijk2476

3 жыл бұрын

@@AudioScienceReview maybe you can make a little series? One diagram per movie, then the why, what how. describe why it's important to audible effects, what is measured, how it can be effected(by what). Just an idea 🙂 do with it what you want ☺️

Keep em coming, this is great! Thank you!

@AudioScienceReview

3 жыл бұрын

I am glad you are finding them useful. I have more planned.

Truth with data to back it. Doing IT and computers for 20 years I've never understood why people buy these, now I have all the proof I need!

@heysplangy

3 жыл бұрын

Sounds compelling, but his fantastic machine can't measure how a human perceives audio. It does a SUPERB job of telling you how much noise is in a system, but not much else.

@heysplangy

3 жыл бұрын

@John Bravo nope, but I have played around enough with different power supplies on switches to know that differences in sound can be had. SINAD is not the determining factor in audio reproduction.

@heysplangy

3 жыл бұрын

@John Bravo why? because I have heard improvement with better power supplies? This is nothing new. Power supplies can make differences; it's an inarguable fact. Don't become just another of Amir's diehard objectivist cult who don't know how to think or listen for themselves. I appreciate much of his testing and attempts at debunking...I mean who's going to argue with a guy with 100k worth of machinery that does all the "listening" for you. hahaha

@QQ-td9id

3 жыл бұрын

@@heysplangy If there is no difference in sound, quantitatively, then there is NO WAY human can perceives the sound different unless placebo effect. LOL

@heysplangy

3 жыл бұрын

@@QQ-td9id hahaha. Logically that would make sense...if your premise was correct. OK. You're using all the right words that a wannabe member of Amir's cult is supposed to...but... "If there is no difference in sound..." blah blah blah. The AP can not tell you that. I know you think it can, but it can not. It's going to give you a very good signal/spectrum analysis and extraordinarily detailed signal to noise and distortion measurements. It is not going to tell what something *sounds* like. Machines can't do that(yet). Now...with some effort and some different thinking, maybe they can come close. Can the AP quantify soundstage? Depth? width? The space between? how a stereo image manifests. ...a spinorama for stereo imaging presentation. I get it...you've found the guy with the fancy machine and an impressive (but really not that impressive) resume, and he's telling you all the things you want to hear so you don't actually have to do the listening or the thinking all by yourself...since now you're pretty much an expert hahaha. Some people just need to have their reality defined for them... If it walks like a cult and talks like a cult...

Thanks Amirm! Been working high speed digital RF for years: IT JUST WERKS. Thanks for explaining this to everyone.

Thank you for this great video. Very informative. Being a network tech guy and seeing products being sold as geared to audiophiles i just can’t help myself not to get upset especially if my friends think that it really does making some improvements and that they need this expensive gear.

When you're next in need of ideas, a related test I'd love to see would be Ethernet cable vs Wi-Fi. Love the hard work here - thank you!

@guyboisvert66

6 ай бұрын

Won't do anything special if you have sufficient bandwidth. The streamer use buffering, all will go well if the buffer never gets empty.

Thank you Amir. Great theoretical and applied analysis to a subject I have been intrigued about for a while. As a software engineer I was very dubious, however I could accommodate the theory that noise could be dragged into a system via the ethernet port. I feel I'm now much better informed and justified in not spending any extra money in this area of my setup.

@AudioScienceReview

3 жыл бұрын

My pleasure Chris.

There are so many scammers on the internet that try to sell these "audiophile switches," claiming ridiculous improvements with no proof. This video is really informative and conclusive

Another valuable video by a seemingly polite, mature, intelligent, well spoken, nice guy.: a rare thing these days especially on youtube. Thanks for putting these out.

A voice of reason in a cacophony of fools! So glad to see you on KZread, Amir!

Amir please keep doing videos. Huge fan. I love the honest delivery.

It's nice to have an explanation of the graphs. I usually skip them on ASR and go direct to your summary. Even then I take the results with a pinch of salt. Some products that measure poorly can still sound great. But I'm glad that I now have a better understanding of the science and appreciate the way you cut through the BS manufacturers use to flog their wares.

@guyboisvert66

6 ай бұрын

If it measures poorly, then you're just hearing a distorted / colored version of the original signal. Yes you can love it, not me... You can as well buy an equalizer if your like. An example of that are the tube amps that add harmonic distortion, some are not even linear!

Knocking them down one at a time. Another great video Amir.

@AudioScienceReview

3 жыл бұрын

Thanks partner. :)

Hello Amir! Far more people from the HiFi community should learn from what you are doing here and in the forums. I'm really with you when you are reading about the Silent Angel N8! :D :D I'm totally getting the oldschool EEVblog vibes from episode 29 (Audiophoolery). Please keep it up like this. Cheers!

Awesome review, a breath of fresh air! Don’t ever sellout, we need intelligent people like you Amir to stop the audio foolery.

@Burevestnik9M730

3 жыл бұрын

There is a whole movement of unprecedented morons and imbeciles led by the cult leader Chris Connaker of Audiophile Style LLC 4211 York Avenue North Minneapolis MN 55422 United States who negate the obvious: there is no f. difference between $20 switch and $640 EtherRegen. It is not the question whether it sounds "good" or "bad". It sounds IDENTICAL. Amir both listened and measured. No f. difference. EtherRegen is one more snake oil on the market intended for - sheep. Shaaave the sheep - screams Connaker and his bunch of scammers.

@KeithHeinrich

3 жыл бұрын

@@Burevestnik9M730 I agree but individuals have the freedom to waste their money as they see fit. Arguably cables and switches are cheaper than drugs in the long term and do less harm. ;)

@richardhernandez7741

2 жыл бұрын

Why on Earth does it matter to you how others listen? Oh... you care how others spend their money... How so very altruistic.

@Pete.across.the.street

2 жыл бұрын

Does nobody see the problem with his tests?

@baredesigns1

2 жыл бұрын

@@Pete.across.the.street please educate us, what it means.

Amir! Thank you so much for making vids. Love your reviews!

Finally a breath of fresh air!!! Thanks for all the work Amir.

I worked at a GM car plant (Detroit/Hamtramck Assembly) for 30 years in the IT department. The plant was 100% dependent on the data from the servers and the network. If for any reason the line stopped running it cost $50,000 a minute (USD). Needless to say there was a lot of emphasis on us keeping data flowing. Never once was there a discussion about putting different switches in (we used Cisco) that might be better because they had magical properties. it was a noise laden environment with hundreds of welding robots running 18 hours a day and thousands of Motorola DMR radios in constant use. Oh and the plant has it's own substation too. And yet the data still flowed. Rest assured that the 1's and 0's don't care what wire they go down.

@betochiwas

2 жыл бұрын

Yeah, I have worked with a lot of Industrial Switches, Allen Bradley, Cisco, Ntron they all work quite fine undee rough conditions

@nicktube3904

2 жыл бұрын

How can you explain the original Smps of my Cisco 2960 fucks up my streamer and high end dac with nasty noise. Changed to a clean linear Farad psu and music sounded magical!

@zackschindler8334

2 жыл бұрын

@@nicktube3904 If you get a new power cable for $2k it will sound a lot betterer!

@Ceko

2 жыл бұрын

@@nicktube3904 music sounded magical because it’s magic!

@srkbear1

2 жыл бұрын

@@nicktube3904 It sounded better because you paid money for it and needed it to sound better. The more money you spend the more investment you have in the result. Amir just showed you with irrefutable evidence that the actual data arriving to your DAC is unchanged by these “upgrades”, and besides, if there were errors arriving to your DAC via a network stream the result would be dropouts, glitches and other non-musical events, not better “sound”. You’re suggesting that this switch could somehow add something analog and musical to a series of ones and zeros-making the original waveform prettier in some miraculous fashion. It’s preposterous. Use your brain in the service of logic, not in the service of aping manufacturer marketing slogans-the internet is forever and you’re memorializing silly things.

This is eye opening and hysterical. Thank you for work!

Ethernet doesn’t carry noise into your audio or video layer. Amir is so polite for measuring all these switches proving something that is impossible for not being there.

Oh Amir, you are talking so much out of my heart. It‘s like your are my tongue. Thanks for all your work.

I'm loving the videos. Keep it up!

@AudioScienceReview

3 жыл бұрын

Will do given all this kind encouragement.

Great explanation, thank you for that, with your video a lot of people in Portugal are not going to be happy .

I'm a software guy and have enough networking experience to finally understand the world of BS in audio. This one hit a nerve, because thinking you may NEED to improve a network switch is hilarious to me. Talk about fixing a problem that doesn't exist.

@AudioScienceReview

2 жыл бұрын

It is amazing, isn't it? Yet every day more companies are producing more of these. It is easy game. Get a dirt cheap switch, change its power supply and maybe the clock and claim it is an audiophile switch!

@dekanyz

2 жыл бұрын

@@AudioScienceReview I think, many people want to spend money to improve their gear, even if it sounds superiour. The manufacturers just allow them to do that by creating high end cables, fuses and such devices.

@eDXTRe

Жыл бұрын

Not to speak of 'high end CAT6 audio grade' cables🤣😂...... Pure baloney i think. Just normal switch and cat5 cat6 cable does work perfectly fine😊

@erics.4113

Жыл бұрын

@@eDXTRe imagine the results of a panel blind testing cat6 cables

@eDXTRe

Жыл бұрын

@@erics.4113 I guess 50/50 results may be bud more like 40/60 60/40 for furtunate gamblers. But someone who pretends to hear difference must easily be able to get 90 or 100 percent score in a double blind test, which they never want to do😅

keep it up sir, this is what we need to stop the new people from wasting money and they can spend it where it actually counts, much respect and thank you!!!!!!

Just want to say that your comments at the end made so much sense and even though it is obvious I needed to hear you say it out loud to hammer it home for me. That is why more and more I count on my wife to comment on her feelings whenever I change things in my system. She has no emotion when it comes to the gear so I can always count on an honest opinion from her.

Would love to see a test of iFi's iPowerX - will it make any difference to analogue audio that comes out of the DAC ? or snake oil ?

@Gabriel-of-YouTube

3 жыл бұрын

That's a different thing.

@SwirlingDragonMist

3 жыл бұрын

I've seen a few videos showing Ifi products improving the sound of audio output, noise that can be heard right in the video.

@Lockk9

3 жыл бұрын

@@SwirlingDragonMist Would you have a Link to a specific video where you can actually hear the difference ?

@SwirlingDragonMist

3 жыл бұрын

@@Lockk9 Here ya go kzread.info/dash/bejne/immKk6yIg83IgqQ.html

@SwirlingDragonMist

3 жыл бұрын

@@Lockk9 this one too kzread.info/dash/bejne/lIphybV6k8nZY6g.html

Thanks very much for this review. A very minor clarification in wording is that an Ethernet LAN switch handles frames, not packets.

I think some or all of us audiophools should actually just donate 10% to you of what we were going to spend on snakeoil instead! Thank you Sir!

A wild Amir appears

@AudioScienceReview

3 жыл бұрын

Hello Metal. :) Did I hear right that you are no longer doing headphone reviews? You were doing such a great job of them. I usually seek out reviews of headphones before doing my own and invariably I would find that I agree with your assessment far more than others.

@metal571

3 жыл бұрын

@@AudioScienceReview That's true, and my final video explains it, mostly. Nowadays I try to help audio companies behind the scenes by providing subjective impressions and suggestions where possible if they are interested, and I mostly live on Twitter, talking with Dr. Olive, Resolve, oratory, etc. Appreciate the kind words. Means a lot coming from you man. Stay well

@metal571

3 жыл бұрын

@@AudioScienceReview Are you planning on doing headphone reviews on this channel too? Would be really interested to see those. The world needs as many measurement-backed reviews as possible, Tyll style of course

Great and honest video Amir, well done.

@AudioScienceReview

3 жыл бұрын

Appreciate it Derek.

Thank you sir! Very interesting and educational. Hearing you explain takes your measurements to the next level of clarity.

thx a while great bunch Amir. I have been living with my TP-Link Archer wifi routers and using the hardwired ethernet ports for the critical communication, all audio equipment being hardwired ethernet. Whatever they say about wifi.... hardwired ethernet is rock solid. You saved me a lot of headache and pain and nightmares. The TP-Link strategy stays :-)

I don’t think it was explicitly stated in the video, but essentially what happens is the ethernet packets arrive at the streaming device, they are buffered in a queue, then they are read out to the DAC which uses its *own clock* to reconstruct the original analog signal. Ethernet clock jitter is completely irrelevant.

@guyboisvert66

6 ай бұрын

Exactly!

Great video. One tiny quibble i'd make is that ethernet units are called "frames", rather than "packets". "Packets" are the encapsulated data of IP, and "segments" are the encapsulated data of TCP (or whatever other transport layer protocol is in use). It's a small distinction but an important one when talking to networking folks. Otherwise, spot on analysis backed up with clear, reproducable testing.

Thanks a lot Amir! Great channel!

Great video Amir, thanks for this one. Any chance you will do the same for the "superior" power sources?

@AudioScienceReview

3 жыл бұрын

You are mind reader because I was thinking that was the next one that would be necessary to do! I will up its priority. :)

@joserafaelhernandezcarucci1324

3 жыл бұрын

@@AudioScienceReview fantastic, keep up the great work! :)

@Adream-lf3mw

3 жыл бұрын

@@AudioScienceReview Maybe verify or debunk the $5k Audioquest power conditioner?

@jonathanmatthew5631

3 жыл бұрын

@@AudioScienceReview please do so! I am also interested in your power supply review

BTW: I found a „test“ of the Innuos PhoenixNET before watching your video. Your arguments are almost the same as my thoughts (I‘m a computer scientist). Unfortunately I think that I shouldn’t link to this test here but I wanna claim that it‘s rather criminal to fool people like they do. So keep up in educating us audiophilly!

When I saw the title of the video, I laughed. I still watched the video anyway, then laughed again. I like my hi-fi setup, and have I feel a multi-room system at about the start of what people consider audiophile, and no further. Diminishing returns after that point in my opinion. I went over to FLAC files running from a central home media server about 20 years ago, to small pcs around the house, connected to my DACS via toslinks, to prevent any ground noise from the pcs getting through to the DACS. Most of my hi-fi equipment is Arcam and Musical Fidelity, with one Yamaha integrated receiver in the office. I have never, for one second, considered network switches to have an impact on the sound, probably because I had a CCNA qualification (now lapsed) and understand how TCP/IP works I feel reasonably well. I enjoyed your video, probably in part because of confirmation bias. Over time, the connected pcs have become smaller and lower power, and the media server has had several rounds of upgrades, but everything downstream of the toslinks has stayed the same. 1990's sound still sounds good to me.

Nice video! Would you anticipate any difference if a PoE switch is thrown into the mix?

@AudioScienceReview

3 жыл бұрын

I do not. The barrier to noise from Ethernet is so strong that it doesn't matter what is on the other side. Now, if you use POE to power your gear -- which is rare -- then its dirty nature may make a difference. I have tested one such product: www.audiosciencereview.com/forum/index.php?threads/dante-avio-review-streaming-audio-interfaces.19062/

Sir, sorry for the expression, but you're kick*ss ! Love your work ! I'm ITman and an rookie audiophile. And I'll stay rookie AF... When I first heared for audiograde UTP cables, that was too much for me ...

I Wonder if you could give us data on power line wifi connection for audio. I use that between my streamer and my nas/servir roon / at the opposit from my system without issue or noise. Bit Wonder if you could analyse it

Thank you so much for this!!

I know this video was made quite a while but I hope you can reply. I've been searching for an all-digital surround processor that can leverage Dante AOIP. Storm Audio has one for $26k and JBL has 3 Synthesis processors that also has Dante integration, with the SDP-55 being the least expensive and actually affordable second-hand. My question is, is the audio pristine in a surround processor before it's run through its DACs? If it is, one could purchase an SDP-55, send audio through Dante, and then onto our DAC(s) of choice or Dante-In of a studio monitor, and we'd only have to worry about that performance of the outboard DAC(s).... right? Companies like HEDD audio have Dante bridges for their monitors that their very nice in-monitor DAC could resolve beautifully. If the SDP-55 truly doesn't harm the audio when sent via Dante, a whole new world of beautiful DACs and powerful DSP (such as Q-SYS) open up to us. You could sort-of DIY you're own Trinnov with far less investment and far better measuring gear.

Amir, thank you so much for making these types of videos. We need more truthful information. I really appreciate the work you are doing. I subscribed right away and watch all the vids you put out so far. Maybe once you get around to testing all the gear you have planned you can verify or debunk the high cost of Pakedge port switches and wireless routers costing in excess of $1,000 each? Thanks again.

@guyboisvert66

6 ай бұрын

Control4 just charge premium for something you can get really cheap... even pro stuff like Mikrotik cost much less than that!

So the Ether regen is absolute transparent too. It doesn’t alter the signal! What a device!

Thank you for taking time for debunking these kind of snake oil devices.

@Pete.across.the.street

2 жыл бұрын

He's selling the snake oil, measuring jitter after the dac,... Dumbest thing I've heard today.

But the great Hans Beekhuyzen said audiophile switches sound better than those dirty consumer switches. He has an audio analyzer for decoration in his studio, so he must know what he's talking about. 😁

@AudioScienceReview

3 жыл бұрын

Right on. Hans is very well spoken and produces great videos. But as say, uses his instrumentation for décor. He talks forever how jitter is removed this way and that way but won't power on that analyzer to realize that they have not.

@urom

3 жыл бұрын

after this "audio evangelist" starts to do this switch nonsence, i stopped watching his channel, because this discredited all the rest he talks about

@acoustic61

3 жыл бұрын

I stopped watching Beekhuyzen years before the switch review. Same with Audiostream, Darko etc. I cancelled my Stereophile subscription last year after three decades. JA was good at writing convincing reviews of so-so products. Computer Audiophile tried hard but had no technical background or writing skills. Amir is a breath of fresh air and likely is responsible for deprogramming of many recovering audiophiles.

@decoryder

3 жыл бұрын

Hans Beekhuyzen doesn't lie, he's a man of great personal and professional integrity, so when he says he's hearing something, I believe him. I don't understand why he's hearing it and I'm quite frustrated by the fact that I don't understand how he could be hearing anything at all, but I don't doubt his words.

@MosoKaiser

3 жыл бұрын

@@decoryder Expectation bias is a bitch. Also, the fear of losing on sponsorships and review units being sent one's way.

Brilliant. You made me go and touch my cheap-o $20 switch under my desk just to make sure. It was cold as a stone. :)

@Audio Science Review Hi Amir great review. Have you tried or any experience with converting Ethernet to fiber then back to Ethernet before the dac? Curious if the measurements there show any improvement or if it’s one of the same, have read more about that lately. Thank you kindly

Hi Amir Longtime reader and follower of your excellent and thorough reviews on ASR . Thank you for sharing your knowledge on the platform too . Would love to hear your thoughts on the efficacy of Power Conditioners by PS Audio , Furman and other manufacturers. Thanks for your efforts and wisdom .

I'm dreaming of a similar debunking analysis on streamers such as a 1200$ SOtM sMS-200ultra compared to a 40$ Raspberry Pi4....

@r423sdex

3 жыл бұрын

Chromecast audio !!!

@antoniomarsicola8608

3 жыл бұрын

@@r423sdex great gear, i have it, but it hasn't a usb out so it's not asynchronous, it could really have some jitter

@dilshadmashoor7566

2 жыл бұрын

Can you please post a link to where you found a Raspberry Pi4 for $40 thanking you in advance

Amir is actually a very funny person in these videos. I really appreciate it.

22:06 - very good and important point to make.

Great work here. It's so refreshing to have science/data based reviews of this stuff.

I work, and have worked with networks for over 2 decades, and there is no way any half-decent switch can make a positive difference to an audio signal. If the switch wasn't any good, it would have been taken off the network infrastructure because it is obviously corrupting data that a typical TCP stack (whether on a L2 or L3 device) couldn't already 'correct', or more accurately, request again. A faulty switch usually speaks of hardware failure. Data traffic is far more crucial to transmit accurately than audio signal; the audio signal is carried as data. A switch is primarily created to transmit data accurately (along with routing capabilities and possibly other network management functions), bit perfect if you will. And if data is corrupt, you'll literally miss out on 'bits' of music.

Your video justified that I don’t need to get that expansive switchers I just ranned to my neighborhood electronics store and grab that cheap network switch, guess what? The streamer sounds great even just listening to my files that was sent thru the streamer or thru my internet music, thanks for sharing this review 👍

It does depend on whether you’re using TCP or UDP. While UDP is less common, or at least less familiar since the web runs on TCP, UDP is actually very common if not standard for applications like online gaming or streaming audio or video. That’s because they are time sensitive - by the time you would receive the retransmission, it’s too late, the world has moved on and that data is irrelevant. Video would rather drop some pixels or display some noise or compression artifacts or briefly reduce the resolution rather than freeze. The action from other players in online video games continues in real time whether your network can keep up or not. Finding out some detail of what they did 10 seconds ago is 10 seconds too late, the world has already moved on. Etc. Most such applications build their own reliability protocol on top of UDP, rather than use TCP; they use something more appropriate for their use case than TCP is. On the other hand, data is data and everyone wants fast, reliable transmission of packets no matter the application. Wired Ethernet, as you say, is usually not a cause of problems in most home settings. Gigabit Ethernet has way more than enough bandwidth to easily keep up with even multichannel high-res audio, especially if there is little other network traffic. But for cases where it is too congested (which happens at a lot lower bitrate that the advertised maximum, maybe half as much or less), there is a feature called Quality of Service (QoS) which some products support, which allows you to set some traffic as having priority over others, because it needs to arrive as quickly as possible. So audiophiles might want to get gigabit Ethernet switches with QoS, and make sure to set it to prioritize their streaming audio data. But they don’t need to be specific “audiophile” versions, that’s silly. The capabilities needed are the same as for gamers, which is the most common need for this type of feature and capability. And of course, if the network isn’t keeping up with needed data rates, it’s likely to be extremely obvious (choppy or interrupted audio), not some subtle degradation of audio quality (unless you’re streaming through some service that can automatically degrade the data being sent to a lower bitrate in response to network conditions, like KZread does; then a subtle degradation is entirely possible). Jitter? They must be kidding. Network packets come in when they come in, it could be sooner or later, by a substantial margin. It’s up to the D/A converter to assemble data that’s been temporarily stored in a buffer and use its own clock to emit them on a specific schedule. As long as there is enough data in the buffer, the timing or noise of the network switch is irrelevant.

@guyboisvert66

6 ай бұрын

Exactly! TCP/IP and UDP/IP are used in best effort networks, like the internet, your intranet, etc. So a streamer must use buffering technique (async communication) to make sure it has enough data to feed the DAC even if the packet receiving bandwidth can vary a lot. The buffer can be as big as the RAM permit... As for UDP vs TCP, the difference is that UDP is connectionless and sender / receiver must take car of lost packets whereas TCP make it for you. For your network, just design it to get the less impact possible from the potential big data transfers between, say, your PC and your server. That's quite easy to do... For internet, yes it's good to get a router that supports QoS, check the Mikrotik line of Pro Routers that offers that and then some. It's pro stuff for ridiculously low price. If you have a more complex and busy network, then a switch with QoS could be used, but as a network engineer, again it's easy to design a network to avoid this while not having to implement QoS... And for those talking about noise, linear power supplies, jitter and all other inapplicable nonsense, please spare us your complete misunderstanding of networking... Go back study and maybe one day, you'll realize that this is complete snake oil...

Excellent video. Do more like this please ;)

As a 20 year networking/data specialist this video is a breath of fresh air. I especially like how you disected the mindset of the people who buy stuff like this and formulated a video to actually convince them. When asked questions like these I generally give very similar answers to people -- minus the fancy graphs and presentation. One thing you should mention is mention is the concept of CRC checks.

@Astulock86

Жыл бұрын

Cyclical redundancy check? I have an old hard drive with a CRC error and my data is locked away, irretrievable. Any suggestions?

@rodneyvandenoever

Жыл бұрын

The failed CRC check warns you your data is corrupt, and now prevents you from using this corrupted data, which is a good thing (dependent on how you look at it)

Why do you need one? Does your router not have multiple LAN ports?

I recently bought the 80 dollar ifi lan silencer everyone raves about. I noticed no difference whatsoever. I even let it break in for a couple weeks, i know but had to try, and nothing. Didn’t even have to blind test it. This is certainly the latest audio foolery gimmick. If audio enthusiasts would just spend their money on their room instead of this stuff, they would really understand what their current system can ultimately sound like. Thanks for the outstanding work. Peace and happy listening.

@gioponti6359

7 ай бұрын

Your experience puzzles me: i have one in my system, and another one occasionally.. because it changes the SQ, and also, at least in my system, the a bit of the frequency response, i.e. usually and in all positions the ifi device can be inserted, deep bass seems an idea lighter, while treble quality, spatial width and definition, voice etc is improved. Could be your streamer is really not at all susceptible to whatever the ifi device filters. Allegedly Grimm Audio offers one that really doesn’t react on any upgrade upstream the ethernet path, most budget friendly ones are said to do, however. My pro-ject streambox s2 ultra definitely is.

@TimbreDynamics

7 ай бұрын

@@gioponti6359 For anyone to say that a particular component doesn't work in all situations is certainly a mistake since understanding the true nature of all potential use cases is nearly impossible. So if you're hearing an improvement and you are happy with the result, then it's a good choice for you. Personally, I have never heard a difference when it comes to these types of components. Perhaps that may change in the future, but for now, I find spending money elsewhere a lot more scientifically proven and noticeable without question. IMO, your room is more than 50% of your end result. Many people spend money on this stuff before they treat their rooms. That's a huge mistake IMO. Without knowing your situation, that's just a general statement. Your speaker position and room treatment might be great already, but in my experience, most people tend to ignore it completely. Having the right room can be mind-blowing and change your perception of just how good 2 channel audio can be. I'm still on my journey there as well. Peace and happy listening.

@guyboisvert66

6 ай бұрын

@@gioponti6359 You don't have a clue about networking and engineering, please spare us your snake oil...

@gioponti6359

6 ай бұрын

@@guyboisvert66 pls look up the actual meaning of “snake oil” b4 you use the term, unless in your book easily discernible differences go together with “snake oil”.

Brilliant thanks i obviously doubted an audiophile switch would do any good being an IT admin. You have just honeslty proved that

Speaking of WiFi do you have any reviews of the best WiFi products or ones with the best ability to offset or negate potential interference and throwing distance.

Good work Amir! Have you EVER received any response from those manufacturers?

32:26 My spirit animal. Great stuff

Ah yes, jitter--the favorite hobgoblin of snake oil salesmen in the digital age. Back when the Compact Disc was new, and a CD-DA bit stream was totally reliant on the constantly changing angular velocity of the spinning disc itself to keep a constant linear velocity and hence bit rate, there was a kernel of truth to the claims. With those crude systems, the actual time base was mechanical and prone to error. But before long there were portable CD players that copied the jittery bitstream to RAM, then read it out using a new, more stable clock. Problem solved! And when ripped their CDs and saved them as files, it was over. Yes, electronic jitter exists, but with that, you either get the data or you don't; there's no magic middle ground that affects the "sound" without stopping it altogether. In my business we're already using Dante and AES67 to send many channels of audio over IP for video production. We're also using NDI to get full motion video from remote cameras and video servers over IP networks. There are some things we're doing that the casual home user wouldn't, from using precision time protocols to limiting broadcast domains through physical subnetting and/or VLAN. Generally speaking, as long as there's more than enough bandwidth to keep latency at bay, things work great. Latency is no problem when a show is recorded (as long as everything is in sync), but can be a problem for live events. We see this with TV interviews using Zoom, with people talking over each other. But jitter? No.

@GradyJarrell

Жыл бұрын

You want to see jitter? Look at the eye pattern of a CD player!

One can only hope that what you've shown can help at least one self proclaimed 'audiophile' understand the error of their ways. I had placed a critical comment on one 'audiophile's' review of an 'audio grade' Ethernet Switch and got slammed. I think it was that old German guy. While I understand TCP-IP, asynchronous communications and buffering, some 'audiophiles' make there own truths. Kind of like politics these days. People want to believe in something and companies are popping up left and right to meet those needs. Very nice review.

@waqasahmed939

2 жыл бұрын

It's really weird to see audio guys ask network guys about what switch they recommend for audio, and we're like "Just any decent switch will do"

@armoth6958

2 жыл бұрын

Hey, note - I’m an audiophile. Doesn’t mean I believe in nonsense claims by companies

@sporqist

Жыл бұрын

@@waqasahmed939 -- audiophile proceeds to power his 15$ TP-Link switch with a linear power supply :)

@goodsound4756

5 ай бұрын

I consider myself as an audiophile, I tested such a switch, but couldn’t hear *any* difference, so why should I need one? Don’t declare audiophiles generally as Fools.

@chrisharper2658

5 ай бұрын

@@goodsound4756 Not all audiophiles are the same and to that point, it seems some audiophiles are fools and have very strong opinions too. I think the term audiophile can be very ambiguous but is mostly ego driven.

Me new favourite KZread channel. More please.

@AudioScienceReview

3 жыл бұрын

Thanks Chester. Was only going to do these videos occasionally but seeing the reaction, you can expect more.

I am still waiting for an "audiophile person" to comment on the "break-in period of the switch" and a proper "warm up process" before it starts working at its "full potential". Because we all know that those 0s and 1s need to loosen up a bit over time and if you warm them up before hand you definitely get richer sound :)

@AudioScienceReview

3 жыл бұрын

As it happens, the person who sent it to me "broke it in" from what I recall by running it a while. But yeh, that takes absurdity to an entirely different level.

Peter from Steinway pianos was in a caliberation with Lyngdorf open baffle speakers that were crazy high in prices but for me it was the best in the show i went to. He also mentioned that 20% is the speakers that are responsible for the sound and 80% the room and acoustics. That is why he was comitted to the dsp that Lyngdorf used for their high end speakers.

I think we need oxygen free UTP cables to ensure our TCP/IP packets maintain integrity ... lol Good video!

Can you confirm if audio transmission for Roon for example is TCP only? Also isn't audio/video usually over UDP?

@thomaswalder4808

18 күн бұрын

UDP is normally used for applications where close real time is important and which are data in both directions. When you do a phone call over Internet you not want a buffer which delays the playback by 3 seconds as that would make bidirectional conversations difficult. Streaming has not to be real time and it transmits data only in one direction. If the playback is delayed by some seconds it does not matter. Even if UDP is used that does not necessarily mean that there is no error correction. TCP/IP handles all errors and packets arriving in wrong order on its own - so the application developer not have to worry about it. UDP does not - but the application developer can still implement its own error handling.

Thanks for doing this. I was wondering how it could make a difference. I have a LPS on my switch just to keep the wal-wart out of the chain. Great review!!

@guyboisvert66

6 ай бұрын

Easy to answer, you don't need an LPS on any networking gear...

another great video, thanks :)

Yay ! Finally someone that shows us what we mere mortals already know. I have friends that belive these things actually work !

@njm1971nyc

2 жыл бұрын

Please send me their contact details - I have a mountain of power cords and other junk that I'm gonna spray with pure snake oil and sell for $600 each 😄

Do we need to have an Audiophile Internet Service Provider?

Amir, I can see you have a message, visible on the top of your screen... Better to answer to it than spend some time in this bs gear. Thanks a lot for the video, i learn a lot each time!

@AudioScienceReview

3 жыл бұрын

No matter how often I read and respond to forum messages, reports, etc., more pops up the next minute! I feel like I am back at more corporate life getting hundreds of emails a day! Still, they are important and I answer them all.

Hi Amir. Great video. I might have missed it in your video, but do you think it is useful for your audience when talking about Ethernet to talk about bit error rates (BER)? I am an engineer developing chips for networking equipment and BER testing is one of the tests we do to ensure the quality of the network connection and the quality of the transmitter and receiver paths. Our Ethernet testing usually has a BER threshold of 10^-12 with some customers requiring BER thresholds up to 10^-15.

Something I've always wondered about with these kinda products (be it cables, hardware devies etc.) - If it can be *proven* to have no measurable difference between 'non-audiophile' equivalents, how do the companies get away with the marketing blurb from a Consumer Protection/Trades Descriptions POV ?

Yes Amir is the best. I believe in the testing he does. Bottom line: My DAC buffers almost 30 seconds of minutes of data and then reclocks it on the way out! Let your components do what they were designed to do...

Please test a Shun Mook mpingo disc. I want to know if it works. 🤔

Yeah i was just offered a deal of EtherRegen and this opened my eyes Thanks Amir

The English Electric switch seems popular - but it is slow. I have my 2-NAS drives, Auralic Altair G2.1 (Streamer with SSD), Roon Nucleus+ (with SSD), Apple TV and various hifi items and my MBP all connected via 10G/1G/100mb switch(s) and cat-7 cables. I am not aware of signal degradation or noise -- but there are issues with playback on DSD512 and similar sources. Hence why I added an SSD to my Altair. This is now my "home" for all very high definition audio files I own -- all the content I bought from NativeDSD and HDTracks is now on the Altair's internal SSD. Roon and Qubuz both play via ethernet streamed via the Nucleus or Altair. Output is via balanced audio cables and a valve headphone amp to the balanced analogue input on my A=V amp. I am modifying my set up to move my MBP out off the direct chain for playback of audio/video files. HOWEVER -- recently I have suffered my MBP intermittently dropping both the ethernet and wireless connection - solving this is next on my list.

Honestly speaking, thanks for reviewing clearly pointless devices. You know it is a waste of your time. Most people wouldn't even bother. But I think it does a great service to those who are on the edge of believing in measurements. I for one appreciate it :)

Glad we got that sorted out

dude has experienced them all and finally sees through the whole audiophile myth. 👍 It's like top-end scientists often eventually resort to religion. 🙌 Guys, tinker less, listen to more music. (eventho i agree tinkering itself is fun. but let's agree not to let psychology blur our hearing.)

This is something I've wondered for a while now with my job in Pro Audio sector and Dante.

I would love to know Amir's opinions on the Melco s100 that goes for 2 thousand Euros

The last five minuets of this video says it all. Don't go looking for improvements because you will most likely find some, wether you switch out a component or not. Let the improvements find you, Also, this is probably the only you tuber I believe, most of them are just salesmen. Influence's.

Circling back to this again after some time. I recently saw elsewhere a review of a modified dlink switch being marketed as an audiophile switch. It was sealed tight, they didn't want anyone digging around in there but what was found was some components with identification marks ground away to conceal them and some potted for the same reason. But the great big improvement was - "drum roll" - holographic decals. For real. Testing revealed nothing of consequence as anyone who understands ethernet would expect and in blind listening testing, most users could tell no difference between two different switches. Of course not everyone has golden ears... ;) Some of the other digital audiophile upgrades available would make anyone's eyes roll. Stupendously expensive ethernet cables, plastic port covers at just 99 euros each - LAN-Detoxer RJ45 Caps, LAN Caps, Network Decontamination. Its a bit of plastic with a holographic decal. --- To protect unallocated LAN/Ethernet ports from electromagnetic interference (EMI) and dust, as well as to improve sound and image quality. Highly effective optimization for all devices with idle RJ45 ports. The formatted material brings about that electromagnetic frequencies are harmonized and electromagnetic pollution (electro smog) is minimized. Using a special process, which has incorporated our 30 years of experience in the optimization of audiophile audio components, the material receives a special formatting information. The formatted material brings about that electromagnetic frequencies are harmonized and electromagnetic pollution (electro smog) is minimized. The sound gets more depth and three-dimensionality. The timing gains precision and the dynamics are increased. Altogether the tuning with "brand name deleted" formatted accessories brings considerably more naturalness and emotionality. The music sounds less canned and gets more live character. Normally, the tonality is not being affected. The sound does not become brighter or darker. --- And so on. For a bit of retro fun google this: "denon audio ethernet cable". Settle in for a good time as you review the comments. Denon deservedly got trolled hard.

awesome video, i live and worked for a while in the audiophile buiseness and always had to turn away and resist laughing out loud after hearing this bs ;)

I love this video, “you don’t listen to ethernet packets”. True true 😅

Thank you so much.

Gotta change the channel picture to ASR

@AudioScienceReview

3 жыл бұрын

Thanks. I was blind to it being the generic one. Just fixed it.