Mint condition Apogee Mini-DAC. These are very well regarded studio dacs, this one is a great sounding unit and has served me well. I have too much gear so somethings gotta give.

Can be configured for fixed volume output or volume controlled output, I have it set to variable as I prefer to dial volume to where I want it but can change it if you want.

Comes with box, manuals, aes breakout cable, and firewire to thunderbolt adapter (I think it is thunderbolt 1 but I don't have a Mac to test).

Asking $350 shipped conus via paypal g&s.