@BorisM : So how you clarify? @ROSEHAN said only SFP, 1G can work for Internet optical link, no SFP+, no 10G. However, many user here tested some 10G SFP+ stick and it works well.
Some SFP+ might work; itās just not guaranteed that a random one will work in a random cage.
I am ordering 02 x OptoSpan PSFP-11DT31K002 and will let you know the result.
We have stated in our specifications that only SFP (1G) is supported, and that SFP+ or 10G is not supported.
However, similar to SSD compatibility, while all SFP (1G) modules are supported, there may be certain SFP+ or 10G modules that are not supported.
@ROSEHAN if I can buy RSA270, this Kit say that hasā¦
Accessory: SFP module x 2, SFP LC cable 1m, USB 3.0 type B cable 1m, Adaptor, AC power cord, Manual
I can use this SFP module x 2, SFP LC cable 1m between RS130 y RD160? the connection will be OK?
Hi, I am sorry if it is too obvious what I ask. I purchased a Rose rs 130 and connected to multimode fibre optic 10 G home network with a GTEK transceiver 10G SFP+ but it appears no internet connection working. Conversely, if I use the transceiver for RJ 45 (cable 8 from a multi switch with fiber input and RJ 45 output), that works perfectly. I really would like to have a direct fiber optic connection (even if can not be at 10G but much more less) and the fiber connection is the main reason why I preferred Rose over other competitors. If it is necessary to buy a SFP (because SFP + is not compatible )transceiver could You suggest few models that are compatible? Thank You so much in advance. Francesco
While a physical connection using the SFP modules and LC cable is possible, an SFP connection between the RS130 and RD160 is not officially supported.
Therefore, proper operation cannot be guaranteed and is not recommended. Instead, we recommend using USB, coaxial, or optical connections.
We do not have any specific models to recommend. However, you should be able to use the device without issues if you purchase a module that meets the following specifications:
The ports on the RS130 support SFP only.
The maximum throughput of the RS130 is 1 Gbit/s.
Thank You for the quick reply, although it seems that SFP modules are not any more up to date, at least in Europe. It is a surprise to me that an advanced and sophisticated machine as the Rose transport (built in the most digital connected country in the world) is not taking advantage of the 10 G network that is becoming a common standard also in a digital beginner country as is Italy. Best regards, Francesco
Itās not like any audio file that Rose can handle, even the incredibly padded DSD512, would use up more than a fraction of even a 1Gb connection.
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Thank You, Boris Iāve got Your point, but I think that not only audio but also video 4K and possibly 8K would have benefit from a broader and faster data flow. A 5 K euro machine like Rose transport should, in my opinion, be more up to date in this respect. SFP + is overwhelming SFP in the market and not just nowadays.
4K streaming, even for less than optimal setups, is ~50Mbps. For 8K, ~100Mbps is suggested minimum speed. This is all order of magnitude below 1Gbps of a regular SFP module (or a normal 5e Ethernet cable, which will work just as well).
Would it be nice to have 10Gb speed, if one constantly copies files to internal storage? Sure. Would it affect audio or even video playback in any way? No, 1Gbps is already significantly faster than anything needed. Apart from straight copying files around (assuming that the CPU and OS in a Rose could handle it in the first place) 10Gbps would not do anything.
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Thank You Boris, very convincing! So I understand my OOKLA measured 8,3 Gb connection (multimode OM 4 cable with FSP+ transceivers) and overall ethernet cat 8 RJ 45 for my audio-video room is more than redundant. One more question since youāre so kind: I have experienced āstutteringā reproduction with some MQA and non MQA files that I can overcome changing the resampling frequency. Could You explain the technical reasons for this inconvenience that is a little bothersome ? Thank You so much in advance. Francesco
Youāre welcome!
Itās not clear what the 8.3Gnb speed is between. Is it what you get from the Internet, or just the speed between devices on your home network. But in any case this is more than sufficient for any kind of audio (and video) playback. Now, if you have a lot of devices with high bandwidth requirements, it might well make sense to have a high speed backbone (i.e. 10Gb fiber or something). Sure, could be done with a single switch with enough 10Gb ports, but those tend to get very expensive once you start needing more than 4-8 high speed portsā¦
As for your stuttering question. Hard to say with supplied information. Where are you playing them from? Local storage? Streaming service? A local music server (Roon, LMS, or something like that)?
If stuttering disappears if you changer resampling in the Rose itself, that would indicate that the problem is after the network. If you are selecting a different resolution from a streaming service, then it might be your network, but also might be the internet or issues on the serviceās part (Qobuz had some major problems with tracks not even playing at all, or getting stuck lately as they were moving their content distribution system around).
Also, switches (and cables, although not quite as often) do fail, and sometimes in odd ways. I actually did have a Netgear switch die in a way that it was momentarily dropping connection, then reestablishing it. And it did result in stutter on devices connected to that switch. Replaced it and everything started working just fine.
The latter might be reasonably easy to diagnose if you can run a continuous ping to the device in question and see if there are any lost onesā¦ But really, we need more information about your setup and where you are playing from to diagnose.
Finisar FTLF1318P3BTL, Cisco GLC-LH-SMD
Thank You Paul, Iāll try one of them. Regards. Francesco
Hi Boris, I am very grateful for the time You dedicated to my issues. I have connected (in the meanwhile, waiting for an SFP transceiver) the Rose transport with the provided RJ 45 module to the multiswitch 8 port 10G with a cat 8 cable. As the output is concerned, the connection is via I2S to PS audio DAC and than to preamplifier. The stuttering is happening - not all the time - with files chosen from Rose or with Tidal (I donāt have Qobuz any more and You described well why). It seemed to me - at the beginning -that MQA files were the most affected but after few tries it appears to me that really it happens randomly. Just changing resampling in the Rose menu will fix instantaneously the problem. What I noticed, is that sometimes the resampling should be multiple of 44 or 48 Hz alternatively to solve the stuttering but invariably after maximum 2 tries is working well. At this point if I donāt change track and let the program flow, everything is fine. Sometimes, when I change track or file, it happens again. I am sorry if the description is not technical enough but I am not an expert. I hope it will give You enough information to help me to understand what could be the cause. Anyway I will keep trying different configurations also with Roon and see if this will help in the diagnosis. Thank You again so much for Your dedication. Francesco
My personal opinion is that Tidal has its own problems and involvement of some highly unpleasant people, so Iād rather give my money to Qobuz, but thatās just me.
Anyway, from what you are describing it very much seems that the problem is downstream of anything network-related ā both because it happens both with Tidal and local files, and because changing sample rate fixes it.
I have a very low opinion of anything made by PS Audio and of using I2S as a connection, and this does look like an issue somewhere between the 130 and the DAC. I would probably start by trying a different connection between them. If the DAC has it, try USB, itās the best connection for high-res audio anyway, but an S/PDIF should work, at least for troubleshooting, too. If you have a different DAC you could test there, might be a good test as well.
I am sorry Paul I have a multimode fiber cable and your suggestion is about transceiver for unimodal cable so they wonāt work in my internet configuration. I am trying to find something else compatible. Thank You anyway
I am sorry Paul I have a multimode fiber cable and your suggestion is about transceiver for unimodal cable so they wonāt work in my internet configuration. I am trying to find something else compatible. Thank You anyway