I have a Mac Mini 2010 that I don't use anymore. It would make a great music server running Audirvana 3.
2.66 GHz Intel Core 2 Duo
High Sierra OS.
The only issue is that the temp sensor for the CPU is not working resulting in 100% fan...
Apple Mac Mini 2011 for sale - excellent condition and working perfectly, not used for last 4 years since moving to Auralic streamer. Only used for streaming with Audivarna and then Pure Music plus has CD-R drive (unlike later versions) so ideal for copying CD collection which I did using AIFF...