QNAP TS651 roon server 1.6 (build 416) stable Network Details (Including networking gear model/manufacturer and if on WiFi/Ethernet)
QNAP TS651 with USB cable directly to DAC (Matrix Audio X-Sabre Pro MQA), qnap nas on ethernet
Audio Devices (Specify what device you’re using and its connection type - USB/HDMI/etc.)
Matrix Audio X-Sabre Pro MQA DAC on USB connection to NAS
Description Of Issue
I am running my Roon server on an external SSD, connected to a QNAP TS651 nas, which is connected to my network with ethernet cables. I have a USB cable connected between the QNAP nas and my DAC which is capable of MQA unfolding (Matrix Audio X-Sabre Pro MQA).
I can play mp3 and FLAC music from both the files i already have on my nas as well as streamed through my Tidal account, however, the moment i try to play an MQA file, playback does not even happen, and the phone roon app drops the DAC, and immediately asks to “select an audio zone”.
I can play MQA files from the Roon app through my phone (Samsung S10) which unfolds the MQA correctly.
If i use my laptop and connect it directly to the DAC, and play off Roon, it can unfold and play MQA files without issue.
Could the issue be with Roon and my DAC not cooperating?
Actually apologies. I can’t get full mqa on my s10 via the roon app. Please refer to this screenshot. I can, however, get bit perfect lossless with mqa through UAPP.
even if i change MQA capabilities to “no MQA support” and disable MQA core decoder, the moment i try to play an MQA file, Roon will drop the DAC. It is not even able to play a partially unfolded portion/ FLAC portion.
i’ve changed the settings and i can now get it to at least play the song. i have to set the “max bits per sample” to 16. if i set it to 24 or 32, Roon will just not play the song and drop the dac.
if i set it to 16, this is what i get on playback:
If I turn off the dac, the roon server/core no longer sees the dac anymore. Even if I plug/unplug the USB from the qnap. To see the dac again, I have to restart/reinstall the roon server.
Have decided to order a small htpc and hook up the dac directly to the htpc rather than to the nas.
Can you confirm that you are using the newest firmware on the X-Sabre Pro? What happens if you try to host the Roon Core on your laptop and use the QNAP just as an endpoint instead of a Core, does the same issue occur?
I have just tried your suggestion.
Core on laptop.
Dac connected to qnap nas.
It can only play music if “max bits per sample” is set at 16 and “max sample rate” is set at “up to 768khz”. The output for MQA is “high quality” green light on Roon, and the dac display does not show MQA.
If u use any other setting, the music will play for a split second with a purple light on Roon, and then music will suddenly stop and Roon will drop the DAC.
Thanks for giving that a try. Since the issue appears to be related to which output device is in use, I would reach out to Matrix Audio to see if they can comment on their Linux compatibility. It appears though that it is not fully compatible from what you have mentioned, so the Windows bridge may be your best bet in the interim.