Up for sale is my Apogee Duet. It has been used, but it is basically brand new. Comes with everything you would get if purchased new. Works great. I'm only selling because I upgraded to something else. Specs are linked below. These are for Mac only. Price includes shipping. Let me know if you have questions. Thanks.
Apogee Duet - 2 IN x 4 OUT USB Audio Interface
Apogee Duet - 2 IN x 4 OUT USB Audio Interface