I don’t think this is Roon related. It might be some aging capacitor in one of your amp channels. Or a somewhat far fetched possibility is some furniture being moved around your right speaker boosting its volume a couple of dBs
In the same system with Roon installed on Dell with Windows 10 everything is all right. The problem may not be with Roon, but with the computer Mac for sure. Another thing is important to me now. My new Roon Nucleus+ can’t see the DAC Lynk Hilo USB.
A Nucleus IS a computer, running a variant of the Linux OS. It is an Intel NUC motherboard within a solid fanless case, and well chosen hard drive and memory.
Reading their forums, it does seem like it is not really compatible with Linux, as users of Ubuntu and Mint Linux OS, and, users of UltraRendu have been asking the same question and having the same symptoms. Device not seen. I’ve found complaints and pleas for help on their forum dating back to 2015, so I don’t think I’d hold my breath waiting on them for a resolution. Their stance seems to be “we are USB 2.0 compliant with Windows and MacOS”. But, as Ged said, send their tech support a direct email and ask for a direct response to be sure.
What to do. Well, my suggestion would be to keep the Nucleus+ attached via Ethernet. Get yourself a cheap little Windows based machine* on which you will load the Lynx Hilo Windows Drivers and RoonBridge, then connect an ethernet cable to the PC and then USB from the PC to the Hilo Lynx.
You should instantly see it as a network device and be able to play to it.
Is there any difference in sound quality when Nucleus connected directly to the DAC through a high quality USB cable or through a network to the computer?
Not much of any difference. I tend to keep my core, as Roon generally recommends, away from the listening area, so ethernet to an endpoint for me.
One of Roon’s main suggested setups is for Core >>>Ethernet>>>Endpoint>>USB>>DAC. The point is that while an endpoint might indeed be a computer, it is not doing much processing, as it is mainly directing an incoming ethernet stream out the USB drivers to the DAC. While, a core is doing a lot of processing (which may or may not) cause degraded sound issues to a DAC that is directly connected via USB.
As others have noted, I would reach out to Lynx support to confirm if the DAC has Linux compatability, if not then adding a Windows Roon Bridge is likely your best bet.
We always suggest using Ethernet when possible (as this has less electrical noise on the line). You can look over our Sound Quality Guide for more information in this regard.
I received answer from lynx studio about USB connection.
Ah, we do not specifically support Linux here. Other users seem to have success with XMOSS drivers.
Is it possible to add this driver to Nucleus?