One of the most unique digital pieces I have ever used. For the money it is just incredible. All you need is a NAS and use of an iPad or other compatible control. The built-in DAC is sonically very smooth and competes with gear costing multiples more. Music files are transferred from the NAS via your network (Ethernet cable). No server or other rendering device required! Also, you do not have to be a computer/network expert to get this running. PLINIUS has their dedicated application but many more can be used including Linn's Kazoo. Take a look at the great reviews in Absolute Sound and Tone. More photos and other information upon request. I will also do my best to support the buyer post-sale. Thank you.