The Apogee Duet Firewire Audio Interface is a portable device with two mic inputs and two line inputs. It has a maximum sampling rate of 24 bit (96 kHz) and two channels. The interface type is FireWire Interface and it comes with a breakout cable and Firewire cable, as well as an adapter for machines that use Firewire 800. Input/output ports nclude a headphone TRS 1/4" out, Firewire interface, TS 1/4" in, XLR in, and TS 1/4" out. This interface is suitable for home recording and studio/recording. Apogee is know for it's excellent products, the Duet is no exception. Price is firm.