AUDIO over IP - REDNET 3 & 16 Review. AES67 Sets A New Standard for Computer Audio

[Kelowna]

I think what you're referring to is miniGBIC modules?
 


He bought SC/SC modules with built in optical transceivers. Here's one out of the case. Very nice boards. They have DENO's to isolate the ground from the DC supplies, and nice LDO regulators to power the different chips. I was shocked to see build quality at this level for the price. I've compared to $450+ FMC boards and the only real difference is these don't have the military certifications. But every bit as good of build quality.
 

 

[jabbr]

The noise isn't from the Rednet, it's coming from the connected router and computer. I know Ethernet cable is galvanic isolated, but it's not perfect. Noise from the routers, switches, connected computers still gets in.

So why not use an audiograde LAN-isolator like GISO-GB from Acousence?
Very beneficial and completely passive.

 

[Kelowna]

I would love to compare. If it's actually better, That's what I will recommend. But for me I have an SFP port on my switch anyways, and the fiber cable is dirt cheap. The streamer I'm using also has built in fiber.
 
Looking on their website I don't even see a picture, nor do they explain how it works.

 

[Kelowna]

Found it here for 349 Euro for the gigabit version. Quite a bit more than the $150 for 2 FMC's and clean power supply.
 
https://www.cm-audio.net/giso

 

[jabbr]

He bought SC/SC modules with built in optical transceivers. Here's one out of the case. Very nice boards. They have DENO's to isolate the ground from the DC supplies, and nice LDO regulators to power the different chips. I was shocked to see build quality at this level for th

uote name="Kelowna" url="/t/806827/audio-over-ip-rednet-3-16-review-aes67-sets-a-new-standard-for-computer-audio/435#post_12664335"]I think what you're referring to is miniGBIC modules?





.....
[/quote]

Yes, these come in all fibre cable types / optical protocols.
My Cisco switches allow them, but non of my audio devices / PC's.

And IMHO it is not about cheap solutions, but good solutions.
I would not again want to go the route of additional optical converters around cat-cabled systems with external PSU's , however cheap they are. That IMHO would show the improvement if probably not so much from the CAT/ethernet connection, but more from the quality of the RedNet devices.

 

[Kelowna]

  Code:

 He bought SC/SC modules with built in optical transceivers. Here's one out of the case. Very nice boards. They have DENO's to isolate the ground from the DC supplies, and nice LDO regulators to power the different chips. I was shocked to see build quality at this level for th

uote name="Kelowna" url="/t/806827/audio-over-ip-rednet-3-16-review-aes67-sets-a-new-standard-for-computer-audio/435#post_12664335"]I think what you're referring to is miniGBIC modules?





.....

Yes, these come in all fibre cable types / optical protocols.
My Cisco switches allow them, but non of my audio devices / PC's.

And IMHO it is not about cheap solutions, but good solutions.
I would not again want to go the route of additional optical converters around cat-cabled systems with external PSU's , however cheap they are. That IMHO would show the improvement if probably not so much from the CAT/ethernet connection, but more from the quality of the RedNet devices.[/quote]

 
 
Well if it sounds better after adding them than it did before then for some it might be worthwhile. However I just stumbled upon this unit. Maybe I'll try one. If it's better than the optical with Ravenna, then maybe I will stop recommending the fiber converter for those using Ethernet bridges that only have copper inputs:
 
 
http://www.emosystems.com/product/en-30/

 

[Muziqboy]

This one is supposed to be better than a medical lan isolator but a bit pricey.
 
https://www.acoustic-revive.com/english/pcaudio/lan_isolator.html

 

[Kelowna]

  This one is supposed to be better than a medical lan isolator but a bit pricey.
 
https://www.acoustic-revive.com/english/pcaudio/lan_isolator.html

Looks cool. But for some reason Ted B on CA tried all of these isolator's years ago and today he's using the exact same TPlink fiber converters  Rob bought in his reference rig today. Following all the threads over there on the topic, it seems they evolved from the GSIO isolators to FMC's
 
 
http://www.computeraudiophile.com/f22-networking-networked-audio-and-streaming/network-isolation-4265/index2.html

 

[rw35]

TP Link FMCs worked a treat on my Aurender, just put an LPS on the 'business' end.
 
Glad you got the thread back guys, I'm reading with interest.
 

 
 
PS, I sent Aurender a message about AOIP and linked to this thread.

 

[Iving]

https://www.audinate.com/products/dante-enabled/neutrik/neutrik-nxp-rx-dante

 

[Kelowna]

https://www.audinate.com/products/dante-enabled/neutrik/neutrik-nxp-rx-dante

Wow! I haven't seen those yet. I wonder if they work with Ravenna too? Wireless, and maybe even the best sound. I must try!

Edit: ahh maybe not $6420 and max sample rate support of 48khz


http://www.fohonline.com/current-issue/23-road-tests/14403-neutrik-xirium-pro-cable-replacement-system.html

 

[somestranger26]

If you know of a passive way of achieving better results I'm very open to it. But I really do like fiber in general after using it. And the $79 edgerouter x SFP is an excellent switch for AOIP use with its built in SFP port.

 
How does that switch offer an advantage over the devices rb2013 bought? It says that the SFP port is only on the inlet. I was hoping maybe I could return this NIC that I bought and just use the switch with SFP out to an SFP receiver and power that with LPS.

 

[Kelowna]

How does that switch offer an advantage over the devices rb2013 bought? It says that the SFP port is only on the inlet. I was hoping maybe I could return this NIC that I bought and just use the switch with SFP out to an SFP receiver and power that with LPS.

It has the advantage that it's an entire switch. And it has QoS ability, and you can plug your NAS and server into it and have everything in your audio system on 1 solid quality enterprise grade switch. You can assign one of the ports for Internet input to bring Internet into the system from a standard router. But you do have to add the cost of a minigbic module to use the SFP port.

 

[jabbr]

Well if it sounds better after adding them than it did before then for some it might be worthwhile. However I just stumbled upon this unit. Maybe I'll try one. If it's better than the optical with Ravenna, then maybe I will stop recommending the fiber converter for those using Ethernet bridges that only have copper inputs:


http://www.emosystems.com/product/en-30/

The GISO-GB is a much improved isolator than these general isolators/medical isolators.

 

[jabbr]

This one is supposed to be better than a medical lan isolator but a bit pricey.

https://www.acoustic-revive.com/english/pcaudio/lan_isolator.html

The acousence GISO-GB is a much better one, I have heared both. I have the Acoustic Revive still lying about somewhere. The Acoustic Revive is also limited to 100 Mb/s and I prefer to keep my LAN on 1Gb/s if at all possible.