> Now, with the Zoom H4n Pro you can use high quality, film-grade audio on your investigations. The on-board microphones record in all around the unit with adjustable settings for spread. Features live listening capability so you can hear any potential EVPs on the spot. You can even mark files while recoding so you can note areas of the file you want to especially review later. This 4-channel audio recorder delivers superior audio quality and dramatically improves evidence quality. By recording all around the unit, not only can you get superior audio quality, but it will also help you determine where the audio was coming from.