Apogee Electronics USB Cable for Quartet, Duet-iOS, and ONE-iOS (1m) – TOT ALL AUDIO
Apogee Duet 2 Users Guide - Print Version
Amazon.com: Apogee Duet 3 - 2 Channel USB Audio Interface for Recording Mics, Guitars, Keyboards on MAC and PC - Great for Recording, Streaming, and Podcasting : Musical Instruments