I currently use a 2012 Mac Mini as a music server. The internal SSD holds the operating system and I have an external firewire drive that holds my music library. I have a Meridian Explorer DAC and use Audirvana for playback. I am thinking about purchasing a new 3.6GHz quad core Mac Mini to act as a music server and jumping to Roon. I have a few questions The Mac Mini comes with 8GB of RAM but can hold up to 64GB. Is 8GB enough or should I jump to 16GB? This will primarily a music server but may be used at times for other light tasks. The internal SSD starts at 128GB but can go 2TB. Should I put my music library on the internal hard drive or on an external drive? If external is fine then I should be able to get by with just the 128GB internal SSD If I do go with an external drive to hold the music library, spinning disk? SSD? Or does it not make a difference? If I do go with an external drive to hold the music library, bus powered or should I purchase a drive that has its own power supply? I have read that bus powered might compromise sound quality. Lastly, I have read that replacing the switching power supply with a linear power supply can provide sonic improvements. Does anyone have experience with this?