Hi all. Due to using a non-original PSU for my rev. A I after a long period of use experienced a very annoying “coil whine”. I did not discover the actual reason for this was the PSU before after having purchased a brand new Nucleus One unit. (The rev. A worked for a long time with the non-original PSU without any noise). The rev. A, now fitted with the original PSU again, works perfect and the coil whine is gone - so I must decide what unit to keep. I must admit I do like the fact the rev. A unit is without a fan that may become an issue over time, but are there any other reasons I should rather keep the One instead of the rev. A? I do not use the HDMI or USB connectors - I do have a SSD installed. Both units have worked great in my setup. I guess the rev. A is about 5 years old by now. What is your opinion? Thanks, Ole
I’ve had a NUC/ROCK setup for 5 years and have not used any of the Nucleus models. I too am curious what I will eventually need to do for a replacement.
I have read numerous posts on Nucleus m.2 drives and mother board failures, sometimes repeatedly, and now It is good to hear your Nucleus has been doing well for 5 years.
The Nucleus One, as I understand it, is the least expensive solid replacement server for Roon. Much less than the cost of building a NUC/Rock setup.
At that price I would keep it and have one or the other as a backup.
Unless $500 is difficult to come by, I would keep them both. As soon as you get rid of one, the other will fail. Murphy’s law.
Thanks for your input. I agree - I probably should keep both. I cannot find there are any differences in performance or functionally for my use, so I guess I’ll be going back to the rev. A again. In addition I like the size of it better 
You can run both on your network and switch back and forth with your single subscription if you are so inclined. Your Tidal and/or Qobuz accounts will stay in sync but you would need to manually keep your local files and Roon database in sync.
Thanks Jim, good to know 
I have a Nucleus and a ROCK. Trying to come with a compelling reason to run both. Suggests?
No reason really unless you just want to and want an always ready and up to date backup.
My use case is a little different. My main Roon server is a Roon Nucleus. I use my Dell laptop Roon server when away from home.
When Roon ARC was introduced, I purchased a used Mac Mini for $200 and run that to reboot my Nucleus if necessary or reconnect Tidal and/or Qobuz when away from home. It started out as a Roon client but I soon decided to make it a server also.
I use Splashtop to access the Mac Mini remotely when away from home.
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