The M-Audio M-Track Duo is a small-format USB audio interface with two preamps and an attractive software package. Each preamp can be connected to either a microphone, a line-level source (keyboard, electric piano, CD player, etc.) or a passive instrument such as a guitar or bass pickup. The type of source is conveniently set using switches on the front panel. The phantom power required for condenser microphones is also included and is switched on and off simultaneously for both inputs. Monitoring signal and computer audio is done via the headphone output as well as the separate stereo connection for professional studio monitors. The monitoring source is switched between USB (computer audio), Direct Mono and Direct Stereo (preamp signa). With all these features, the M-Audio M-Track Duo is one of the interfaces on the market with the best price-performance ratio, considering that software for making music on the computer for the first time is also included: With the Drum computer MPC Beats, the guitar rack Eleven Lite, the synthesizer Xpand!2 as well as 20 effect plug-ins from Avid and the M-Audio edition of the DAW Pro Tools First, you are equipped for the production of demos, songs and podcasts.