DESC: The MR16HD/CD gives you 4-track simultaneous recording and 16-track playback, plus the ability to bounce 16 tracks to a new song file, so you get your full 16 tracks at mixdown. A built-in 40GB hard drive gives you up to 8 hours of recording (16-track). A built-in CD-R/RW drive lets you create your own audio CD or import/export WAV files.