What are you using as a controller for your audio system?

With the advent of digital, I noticed many Audiophiles using a wide variety of devices to select and control what they listen to, and how. Some are using DACs and bypassing preamps, some are using their android or iphone as a controller in combination with a streaming and/or storing device. Some are using their laptop computers.
I am using a dedicated IPad mini with a Bluesound Node 2 to stream and play music from my NAS. I also use that dionosaur, a CD player with attached external DAC.
What are you using and how is it configured?