RoonServer under Windows Server 2012 R2 Essentials on Dell PowerEdge T630 with 2x Intel Xeon E5-2630L v3 @ 1.80 GHz 8 core CPUs and 32 GB;
Roon for playback on MacBookPro with Meridian Explorer2 USB DAC and on iMac; plural Squeezebox devices (Transporter, Touch, Radios, Classic)