Mac mini now has fourth-generation Intel Core processors, increased graphics performance, and ultrafast 802.11ac wireless networking. It also features two Thunderbolt 2 ports, great built-in apps, and OS X Yosemite. And it's still the world's most power-efficient desktop.
Can be used as a music instrument rig! Works great with Mainstage 3 and Garage Band. Uses bluetooth to connect speakers. On Yosemite, Quicktime offers video, screen and audio capture. IOS 8 allows Iphone 6 to capture video on your OSX.