Network optimization for serious streamers


In my ongoing experiments, now going on seven years, with network optimization for streaming I've discovered a number of optimizations that should work with any ethernet ISP.

 

I've tried a variety of ethernet cables, modems, routers, switches, FMC, ethernet filters, the following is what I've found to be most effective optimizations.

 

I'll start with ISP quality and speed. Recently I discovered 500mbps to be preferable to 300mbps. Along with upgrade in speed, modem capable of 1gb service replaced 600mbps, both have Broadcom chips and powered by same lps. Can't say which more responsible for improvement, speed or modem, presume speed has at least some role in ping time. As for ISP, there is importance in ISP server geographic location to you, shorter distances  means lower ping time. For information as to how ping time affects jitter-https://www.fusionconnect.com/speed-test-plus/ping-jitter-test

 

Now for modems,  modem close to audio system is most favorable, extending coax cable preferable to long ethernet cable. Coax more resistant to rfi and closer positioning to system means one can more easily afford top quality ethernet cable for modem to router connection. The modem should use Broadcom chipset vs. inferior Intel Puma, Broadcom chipset has lower jitter vs the Intel. Modem should be powered via external lps using quality DC and AC cables, lps to power conditioner for ultimate performance.

 

Following close positioning of modem to audio system, router should also be placed near modem in service of same advantage of making highest quality ethernet cable more affordable, in this case, modem to router and router to switches, streamers and NAS. Router should be powered with lps, this lps should be able to provide more amps than router requires in service of providing greater reliability, having lps with reserves of amperage means lps runs cooler, heat is enemy of reliability, longevity. As with modem, quality dc, ac cables and connection to power conditioner.

 

The next finding is new to me, provides very meaningful upgrade to streaming sound quality. Noise from wifi, injected both internally to router and externally with routers sitting close to audio systems has long been a concern to me. I have quality Trifield meter which measures rfi, router with operational wifi manufacture obscenely high levels of rfi, rfi is noise, noise is enemy of streaming at level we're talking about here. And its very likely the more wifi devices one has in home the higher the levels of rfi produced. This noise is then injected into following cables and streaming equipment. One may convince themselves FMC totally isolates this noise, and while correct, it doesn't mitigate the noise and masking going on within router. The only way to eliminate this noise is turning off wifi. And then, how to provide wifi for the many  wifi devices we have at home? The answer is to connect a second router to the primary router. The primary router will only provide ethernet for streamers, switches and/or NAS in audio system, also for the second router.  Second router provides wifi for the home, this scheme keeps vast majority of rfi out of audio system streaming chain. My own measurements find rfi significantly diminished in primary router, more than mulitiples of ten times lower vs wifi enabled. This was seamless install with the Netgear routers I'm using. There may also be value in provisioning higher quality routers. My new primary router, Netgear XR1000 is marketed as a gamer router, claims of lower ping time, latency, jitter vs other routers. Since my old router, Netgear RS7000 didn't have means to monitor ping time I can't provide evidence of this claim. Whatever the case, my XR1000 ping time test measurements are as follows, 25.35ms highest, 16.50ms lowest, this is A+ measurements against objective criteria. Ping time under load is download 25.93ms, upload 37.34ms, idle 17.31ms, this rates as A. My speed of 565gbps rates B grade, likely need 1gb service to get A here. At to how this all pertains to sound quality, adding up the upgrade in ISP speed and the off loading of wifi is without a doubt one of the most substantial, if not most substantial network upgrades I've experienced. While I  long considered my setup as having a vanishing low noise floor, with this setup I heard a new level of vanishing if such a thing is possible. Even more astounding was a more analog like presentation, while I wasn't aware of even the slightest digital presentation prior, this upgrade certainly exposed it was indeed there. It seems logical to conclude there has been some lowering of jitter here.

 

And then we come to the ethernet filter. I suppose audiophile switches can be considered as one, then we have actual filters such as Network Acoustics Muon, my JCAT Net XE and others. I continue to believe these necessary even with the all measures above.

 

Optical conversion is also valid approach post router. While I found generic FMC somewhat effective, at this point I prefer ethernet. On the other hand I've not yet tried optimizing a fiber solution, for example two Sonore OpticalModules, both powered by lps, further upgraded with Finisar optical transceivers.

 

Assuming one has high resolving audio and streaming systems the above network optimizations should provide for substantial sound quality improvements. In my system, perception of performers in room has been taken to a new level of intimacy, meaning a more emotional connection to the performers and performance.

 

At this point, I consider network has been fully optimized, the only upgrade I'm aware of would be ISP upgrade to 1gb.

sns

Well, we were going along fine until the usual suspects entered picture. @fredrik222 you continue to mention only John in your attacks, try out Ed Meitner for some elucidation on jitter and clocks.

 

And so we have the usual, usual argument that what many of us hear is delusional, don't trust your senses, all is snake oil comments. What these people are saying is experiential learning, knowledge is not to be trusted. Their arguments are based on pedantic/reductionist/totalitarian logic, the idea there is this set of 'biblical' facts that are simply irrefutable. There are no more known unknowns, every single fact has been investigated, no point to further investigation, the truth has been arrived at, PERIOD, END OF DISCUSSION. This being the case, we are now considered fools, tools of high end audio industry, and worse, we are now considered heretics. Always notice they love to use the word, 'educate', yes they are the high priests of truth, we need to be educated, or perhaps whipped and bullied into compliance.

 

And so here we are at Audiogon forum,  along with whatsbest and audiophilestyle forums, all homes to those who still believe in experiential learning. We are individuals that HEAR differences, good, bad and indifferent with all kinds of audio equipment. Some of us want to know why we hear those differences and others just enjoy the ride. It is curious why the 'truthbearers' visit these forums. Is it to provoke, laugh, deride, oh forgot, educate.

 

Now, to give the 'truthbearer' the benefit of the doubt. I can think of three reasons for their 'beliefs'. First is they never heard a system capable of delivering sense of real, live performers in room, their own systems compete with or beat the best they've heard so assumption is this is best one can do. Second is they have heard systems superior to their own, but simply live in denial this is so. Denial would come from having heard a system that was tweaked and tuned, since these tweaks and tunes CAN'T work they DON'T work. Third reason would be physically based, the idea not all of our listening senses are equal, the brain/ear complex may be less acute in some people, they can't hear the differences we hear with audio systems. I can relate to this as my visual/brain complex must not be as advanced or acute as some in that I can't differentiate between many of these high end televisions. I've been though a number of them, I can't see much of difference between many models, price tiers, they all kind of look the same to me. I also read these articles that explain how to calibrate for best picture, my choices never correlate to these calibrations! So many more tweaks available, stands, power cords, etc. I have tried any number and can't really see difference.

 

In any case this is my last post in retort to what I suppose we call 'objectivists'. I quit the cable, power, etc arguments some time ago, this is last for network.

 

I'm not trying to 'educate' or enlighten anyone, simply suggestions for improving network that may or may not work for people. Others here doing the same thing. We all don't expect everyone's going to find our particular network paths to be supreme, the open minded discover for themselves best path forward. This doesn't bother me in the least, I'm not some guru, I learn far more than I teach. I've done the NO TWEAK, NO TUNE thing, didn't work for me, seems to bother those with need to be the head supremo.

@sns Don't know who that is, but happy to read and learn, if you have any links. 

Jitter matters a lot in the ADC DAC processes, however, network jitter is not relevant for this. 

@sns Sir thank you for starting this insightful discussion and I apologize for taking the troll's bait.  Like a few here these trolls look for key elements in a thread and pounce on keywords and phrases. Makes me wonder if they are Russian or ASR bots.🤣😂🤣

 

Ed Meitner is principle at EMM Labs, one of the earliest investigators into jitter and it's affects on sound quality. You'll find his views on EMM Labs website, he also contributes to various forums at times, perhaps you could also communicate via email. He is real believer in clocks and having those clocks situated closest to circuits they're affecting.

 

Based on Ed and other's, jitter greatly affects both timing/flow and sound staging, Sense of digititus or differentation between analog and digital comes from human's acute sensitivity to jitter, ever vanishing jitter levels are greatly responsible for rather recent experience of digital competing with very highest vinyl setups. Sound staging also major contributor to sense of ease, being able to perceive actual performers in room, hearing deep into recording. More organized and enlarged sound staging much further separates individual performers, allowing us to hear their individual contribution to the whole, much more lifelike! All I can say is after having heard any number of world class vinyl setups from mid 70's-around 2010's, this at audio shows and dealers, I know what top flight vinyl sounds like. To keep it simple world class vinyl reproduction sounds like performers in room, streaming digital is  capable of same! Streaming can now be your one and only reference quality source, physical media no longer needed. Just like any reference source care must be taken in setup.

@sns Many thanks for sharing this insight! I am sitting here simply gob-smacked while listening to my favorites with the windshield wiped to a new transparency. 

Until your next discovery.