• WANTED: Happy members who like to discuss audio and other topics related to our interest. Desire to learn and share knowledge of science required. There are many reviews of audio hardware and expert members to help answer your questions. Click here to have your audio equipment measured for free!

Gigabit Ethernet/Fiber Media Converter - LOW noise

Status
Not open for further replies.

TRDK

Member
Joined
Aug 17, 2022
Messages
86
Likes
41
Location
Hamburg - Germany
I need your help :)

Looking for a Gigabit Ethernet/Fiber Media Converter with LOW noise.

Right now I have:

Mini Unmanaged 1x 10/100/1000Base-T RJ45 to 1x 1000Base-X SFP Slot Gigabit Ethernet Media Converter


Do to the location of the FMC it would be very nice to have a low noise FMC.

If that it not possible would, could low noise be secured with an ""high-end"" switch mode power supply or linear power supply?

Thanks for any help.

Torben
 
OP
TRDK

TRDK

Member
Joined
Aug 17, 2022
Messages
86
Likes
41
Location
Hamburg - Germany
Does your current media convertor cause an issue? Why are you concerned about noise?

No it works fine (using single mode). But a bit concerned about it's location to other audio products?
Any suggestion - see above?

Torben
 

Vincent Kars

Addicted to Fun and Learning
Technical Expert
Joined
Mar 1, 2016
Messages
781
Likes
1,555
Couple of year ago the conversion of ethernet to optical (and of course back to electrical as your streamer don’t accept optical) was the tweak of the month.
This was all about noise reduction.
This was a bit weird claim because:
-Do you transport noise over your network?
-Does the (electrical) port of a converter doesn’t produce noise?
Of course even more dramatic improvements can be obtained by driving the converter with a linear power supply.

Please note that this type of claims are typical for audiophile forums.
Please note the evidence for all this dramatic improvements is a matter of listening with the eyes, it has never been proven with a proper unsighted test.
Also note that noise is something one can measure. Ever seen any measurement showing improvements by using the optical converter or a linear PSU to drive a switch or using a audiophile switch?
 

DVDdoug

Major Contributor
Joined
May 27, 2021
Messages
2,916
Likes
3,831
No it works fine (using single mode).
If there is no problem how can you make an "improvement"? Of course you can "enhance" the sound with EQ or reverb or some other effect.)

Noise is (usually) an analog problem. Digital is mostly immune to noise. Digital noise would create errors and that would cause data corruption. Usually, corrupted audio is pretty bad and obvious. ...If there is one flipped bit in your bank account and billion dollar error is just as likely as a 1 cent error and it's the same with audio. It's different from analog where it's common to have low-level background noise, and sometimes low levels of distortion and small frequency response variations.)

If there are glitches/dropouts/dropouts in the data stream, that can cause clicks & pops. But usually the data is buffered so the data can flow out of the buffer smoothly and continuously. And Ethernet (and the entire Internet protocol) has very robust error correction. This forum goes all over the world through all kinds of connections and if you see a typo you can be sure it's a human typing error and not data corruption.

Also, sometimes a ground loop through the digital connections can create hum in the analog circuitry. That's where an optical connection (with no common electrical ground) can sometimes help.
 
OP
TRDK

TRDK

Member
Joined
Aug 17, 2022
Messages
86
Likes
41
Location
Hamburg - Germany
@DVDdoug - Thanks for your comments. Your arguments are very valid. And you will probably not believe this - but that is OK :)

I have gone from ethernet to multimode to single mode (last mile). Now I have single mode - and I am happy with that (see below).

So any suggestion to my Q?

Thanks
Torben


OI 16112022SMF.jpg
 

voodooless

Grand Contributor
Forum Donor
Joined
Jun 16, 2020
Messages
10,221
Likes
17,799
Location
Netherlands
What's wrong with your previous topic?


If you would have actually heeded the advice, you would not have had this question in the first place.

For irrational fears, see a shrink...
 
OP
TRDK

TRDK

Member
Joined
Aug 17, 2022
Messages
86
Likes
41
Location
Hamburg - Germany
For irrational fears, see a Looking for a Gigabit Ethernet/Fiber Media Converter with LOW noise...

On a small question - "Looking for a Gigabit Ethernet/Fiber Media Converter with LOW noise" - been told, that I need to see a shrink, comes as a surprise.

But I will give it a thought.

Torben
 

Killingbeans

Major Contributor
Joined
Oct 23, 2018
Messages
4,088
Likes
7,544
Location
Bjerringbro, Denmark.
been told, that I need to see a shrink, comes as a surprise.

It's a comment that comes from frustration. The two authorities you mention in the other thread, The Absolute Sound and PS Audio, are notorious for enticing rampant disregard of the effects cognitive bias has on all humans.

Any technician or electrical engineer, who works with these things and has actual knowledge about it, will tell you the same thing: "Don't worry about it".
 

Berwhale

Major Contributor
Forum Donor
Joined
Aug 29, 2019
Messages
3,933
Likes
4,922
Location
UK
I have a Bill of Materials for a data centre network sitting in front of me. The BoM includes over 1,000 Cisco SFPs (a mixture of 1G, 10G, 25G, 100G and 400G). Transactions worth $millions (perhaps $billions) will pass through them over their lifetime and I am not worried about how noisy they, or the Nexus 9Ks they'll be plugged into, are. On the other hand, I wouldn't suggest attempting any critical listening where they are installed. The DC has a rather high noise floor :)
 

voodooless

Grand Contributor
Forum Donor
Joined
Jun 16, 2020
Messages
10,221
Likes
17,799
Location
Netherlands
On a small question - "Looking for a Gigabit Ethernet/Fiber Media Converter with LOW noise" - been told, that I need to see a shrink, comes as a surprise.
The length of the question has no correlation to the potential need for a shrink ;)

See it this way:

“The internet told me to jump off this super high bridge. They tell me I’ll end up in Walhalla! Now I’m inclined to actually do it, because what if it’s true?”

It’s the audiophile equivalent of Pascal’s wager :facepalm:
 
OP
TRDK

TRDK

Member
Joined
Aug 17, 2022
Messages
86
Likes
41
Location
Hamburg - Germany
So "Don't worry about it" :)

But what about SFP's impact on SQ?:


and


Thanks

Torben
 

Killingbeans

Major Contributor
Joined
Oct 23, 2018
Messages
4,088
Likes
7,544
Location
Bjerringbro, Denmark.
SQ from ethernet gear is something you need to worry even less about.

 
  • Like
Reactions: Mat

Morla

Senior Member
Forum Donor
Joined
Mar 15, 2020
Messages
325
Likes
302
Location
Europe/Germany
What's wrong with your previous topic?


If you would have actually heeded the advice, you would not have had this question in the first place.

For irrational fears, see a shrink...
OP tried again placing those links to audio fairy tales on the forum even through many answered in that other thread. I'm even more convinced it's a troll attempt.

Upcomig topic: jitter introduced by choosing the wrong color on the fiber.
 

BDWoody

Chief Cat Herder
Moderator
Forum Donor
Joined
Jan 9, 2019
Messages
6,948
Likes
22,625
Location
Mid-Atlantic, USA. (Maryland)
So any suggestion to my Q?

Either take the advice given to stop worrying, learn enough about it so you can answer the question yourself, or ask on a forum where you'll get answers that reinforce your need to waste money.

I think we can close this thread.
 
Status
Not open for further replies.
Top Bottom