Perfect entry level interface
the io2 is the perfect entry level interface, it delivers high enough sound quality to record band demos, voice overs, any amateur level application really. however, the total harmonic distortion of the preamp/converters is not as good as more expensive preamps. what this means is that if you want to make a really loud track with pristine audio quality, you need better preamps to allow for better compression and gain when finishing tracks.
this is perfect for people making a start at recording. this would not be perfect for musicians who want commercial sound levels.