Until recently, I had been using Roon with a UDP-205 via ethernet. Since Oppo recently provided an update to do MQA via USB, I put Roon Bridge on a on a Raspberry Pi 3 with fresh dietpi install and connected it to the Oppo via USB. This setup works great for tracks with sampling rates > 192kHz, DSD, and Tidal MQA tracks sounding fantastic, and I’m able to confirm full MQA unfolding and rendering via this method. Awesome!
Here is the problem. Frequently, when changing from either to or from a Tidal MQA 352.8kHz track, I will get 0.5 sec of loud static/white noise sound (like potentially equipment damaging kind of loudness), then silence. Roon will continue to show it is playing the track, but when trying to go to another track, it will rapidly advance to each sequential track in a playlist along with silence. I can get the noise to happen about 50% of the time when switching back and forth from a Tidal MQA 352.8 and a song that is a non-MQA Flac or AAC. Interestingly, DSD files don’t seem to contribute to the problem. It will also happen with an album by Madilyn Paige where Roon doesn’t display file info at all.
I have no problem with Roon and any other connection, whether it is my Sony DAC/headphone amp connected to my MacBook Pro running the Roon Core, a DragonFly Red, Airplay devices, or DLNA.
I also tried a different linux distro on the Raspberry Pi 3 with the exact same response. I updated the Oppo, including the separate USB firmware updates, within the last week. I’ve confirmed the problem with multiple different AAC tracks from several different albums. I’ve searched the forums and internet without a solution. I have updated ffmpeg on the RaspBerry Pi.
Here are some Tidal tracks in MQA 352.8:
POLARITY (Hoff Ensemble)
TrondheimSolistene - in folk style
Mozart Violin Concertos (Marianne Thorsen and Trondheim Solistene)
Additionally, I plugged my MacBook Pro directly to the UDP-205 via USB and couldn’t get the problem to occur.
So in short, I’m having problems with RoonBridge on a Raspberry Pi 3 into an Oppo UDP-205 via USB switching to and from MQA 352.8. It also appears to happen with Tidal tracks that have poor filetype metadata.
If anybody has any ideas, I’d love to hear them.