My first exchange was about using the Zenith as a Roon Endpoint with a Sonictransporter i7 so I could do DSD upsampling in Roon (the DAC in my Lyngdorf TDAI goes up to DSD128). Here was my response: " I hope you know that you can use the Zenith as Roon Core too... You don't really need the SonicTransporter for that matter. Whilst the Zenith does not have a powerful enough CPU to do DSD Upsampling, we did find we preferred the Zenith as a single unit upsampling to 24/384 PCM than the Zenith acting as Roon bridge only with a separate server (i5) doing DSD upsampling" I went with their advice and currently upsample to 352.8/384 PCM in Roon. I briefly tried upsampling to DSD64 in Roon with the Zenith and it seemed to handle it with no issues. Had I ended up using the Sonictransporter as a core, I probably would have slightly higher access speeds, but the slight delays in searching for music in my library (2-3 seconds usually) are no issue for me. It wasn't too many years ago when we actually had to get off our butts and walk across the room to change a CD..
Second question was about the background analysis speed setting while Roon was importing the library info from my NAS. Here was my response: " You can up the background analysis speed to 4 cores for the initial scan to speed things up (I wouldn't advise playing music during this time as it will have an effect on the audio performance). Once that is complete I would change it back to throttled as this is more than adequate for smaller imports."
Next was a question about Spotify. Roon integrates automatically with Tidal, but I also have a Spotify account. Unfortunately you have to use the Zenith software to switch out of Roon mode and back into the Zenith playback software mode to use Spotify. It only takes a minute, but it is not a seamless process.
Then next question was about DSD playback. One day Roon started to automatically downconvert all of my DSD files to 384PCM. The native DSD playback option had vanished from the menu too. I spent some time trying to figure it out, and even went as far as posting on the Roon support forum for help. I had a few suggestions there, but not even the Roon techs could figure out what was happening. I assumed it was an issue with the Zenith and contacted them for help.Nuno opened up a remote support session with me and quickly determined that I had set Roon to control my playback volume via the Roon app instead of the volume control of my Lyngdorf. Using volume control via Roon DSP disables the Roon native DSD processing and that is exactly what I had done. Interesting that Roon support could not figure out the DSP volume issue, even though I gave them a screenshot of that particular setting, but Innuos customer support figured it out right away. Fantastic customer service!
My last question for them was about using optical isolation for the LAN input. I was told that they use an isolation transformer in the unit and didn't feel that additional isolation is necessary.
Keep in mind that I am not the original owner of this unit. My first contact with Innuos was to let them know that I had purchased a Zenith MK II second hand and wanted to do whatever necessary to get it registered in my name. I have had several experiences with companies who do not want to help owners of second-hand gear, but I am incredibly impressed and grateful that Innuos is not one of them.