The Duet 2 Breakout Cable by Apogee Electronics is an extra or replacement cable for the Duet 2 USB audio interface. It provides two 1/4"/XLR combo inputs which enable you to connect instruments such as microphones, guitars, keyboards and more through a single connector. It also offers two 1/4", balanced outputs for connection with most any studio monitors or outboard equipment. The mono-cable design allows for simple cable management and the locking mechanism ensures a secure connection with the Duet 2.