Apogee Symphony 1/0 MKII 8×8+8MP Thunderbolt Audio Interface - $1,600 (Norman)

Wonderful sounding and super fast interface with eight preamps.
I used this occasionally in a professional (obviously smoke-free and meticulously well cared for) studio setting and were always delighted with the results.
In excellent condition with just some very minor marking on the top and sides of the unit (see photos).
* I will include the original power supply, as well as the manual that came with it.