I do not think it is his qnap any NAS is fast enough to stream 16bit 44Kh which Roon reads from the NAS before upsampling.
I usually use a RPI 2 as a RoonBridge and have my NUC in another room everything wired ethernet and have the occasional dropouts when steaming DSD64 .dsf files and upsampling to DSD64 or DSD128 to my Chord Hugo.
But today I moved my NUC (i5 gen 4 with ROCK) + music library on USB 3 drive to the same room and connected it directly to my Chord Hugo.
Guess what dropouts, so I think everything points to the Chord DAC being the problem.
So my advice is to forget about DSD and enjoy upsampling to PCM instead
My point was that the CORE is running on the NAS and this can be a reason that upsampling is not able to be used at higher ratesā¦no NAS should have issues streaming the data to an adequately specād core machine.
Anyway as mentioned this looks to be an issue specific to Chord DSD processing as the common issue.
Same setup, different DAC - No dropouts/hiccups
Other software (JRiver locally on Mac Mini -11, reading from same NAS storage as Roon, software upsampling to DSD128, 2xDSD over DoP) - After increasing Software Buffer to 250ms no pops or clicks but a few dropouts or hickups.
Edit: After a few hours the hickups with JRiver and Mojo are back!
Back to Roon Bridge on the Mac Mini, fine until a few minutes into first song then a couple of dropouts with Mojo.
(Yes, i chose another Peter Gabriel album hereā¦ Same source format though)
When using the Audiobyte Black Dragon i have NEVER heard a dropout or any form of distorsion with Roon. Not this time either, at least three songs into the album, all goes very smoothly.
Thanks Mike! Great news the drop outs are quite annoying.
Do these dropouts happen with the exact same setup, but a different DAC?
I donāt have any non-chord DAC that can take DSD.
Do these dropouts happen with software other than Roon?
No if I use other software I have not had any drop-outs. But I have only tested using windows, on Linux/ROCK and Raspberry PI I have only used Roon (-bridge).
Running Core (Rock) on NUC 7i5BNK with music on Synology 212j NAS. These are attached via cat5 to Netgear unmanaged switch, to which is also attached the router (virgin superhub) and SOTM sms200. SOTM outputs via USB directly to Chord 2qute.
Dropouts/hiccups occur with any dsd upsampling (64 or 128) but never with pcm.
No other dsd dacs I can try.
No other software which upsamples to dsd I can try and no native dsd in my collection!
We have some theories that are working their way through our QA process, and we will reach out to Chord if needed once weāve reached some conclusions.
This process never goes as fast as we might like, but we are working on this and will let everyone know as things progress.
if you canā¦ please also test s/pdif: Chord 2Qute is one of the very few DACs to also accept up to DSD 128 DoP on coaxial andā¦ things are āslightlyā worse than on USB, there
(would really love to put back my Audiophilleo SE in the chain )
These drop-outs are a bit like water torture, in the begining you donāt think they are so bad but after a while you are constantly waiting for the next ādropā.
Summary: Iāve had similar problems with Mac & QNAP NAS.
FWIW - In an earlier incarnation of my system, I had a QNAP HS-210 (admittedly a slow, but silent (with SSDs) NAS) connected via an Ethernet switch to my Mac Mini running Roon core, and from there via USB to my Oppo-105D. Trying to play DXD (352.8/24) didnāt work until I moved the files to the Macās local hard drive. Yeah, the data rate is low (by the standards of any computer built in this decade), but it didnāt work.
Iāve since moved the Mac upstairs (get spinning HDDs out of the listening room!), and am running DietPi on a RPi3 as a Roon endpoint (attached to the same Oppo). After DietPi upgraded its Linux kernel, the RPiās known limitations of sharing bandwidth between its Ethernet and USB became a thing of the past. HQ Player, however, still glitched, suggesting that RoonBridge did more buffering. There is a new HQPlayer NAA in DietPi, but Iāve been lazy and havenāt tried it.
Hmmā¦ Your summary confuses somewhat. I too have Mac and QNAP NAS in my evironment, but they are not causing any issues until i add Chord DAC to the equation!
Which is what this thread is all about imoā¦
ā¦ plus Iām using a Qnap HS-251 and Iāve never seen Roon reading at more than 20-25/Mbs whilst Audirvana reads at at least the double when preloading tracks in RAM but the HS-251 has no issue with this
Hi @pl_svn ---- Thank you for touching base with us, we greatly appreciate the continued feedback.
To bring you (and everyone else) up to speed, our QA team are still conducting tests to try and understand what is causing this behavior to occur. We have some theories, but believe they are still āprematureā at this current point in time.
Furthermore, we have been in contact with chord in an attempt to get some feedback on what could be causing this issue to occur and I would strongly encourage you (if you havenāt already) to contact them as well.
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