The Zoom PodTrak P4 Portable Multitrack Podcast Recorder is designed to produce multi-person podcasts anywhere you go. This recorder allows you to record up to four microphones and 2 echo-free remote calls simultaneously. The Zoom PodTrak P4 Portable Multitrack Podcast Recorder are also capable of triggering sound samples, and provides separate headphone feeds for all your guests, all at the same time and with refreshing simplicity.