Audio is critical to making good quality video content and the Zoom H4N has been in our hearts for fears and one of the most popular digital recorders until this day. I would recommended to any that is will to add shotgun mic to it as well. There are two LXR inputs to plug-in other sources of microphones and accessories. You can also purchase a dead-cat accessories box with remote, horse show mount to attach to your DSLR. Features like Lo-Cut, Comp/limit and many more just like them are ways to improve the audio. It will come with a 2GB standard SD card but you may want to purchase a class 4 SD or higher card for capturing better quality with better reads and writes speed. For the price tag of $199.99 you can't beat or go work. Works well for podcast and live interviews or talking to some gaming buddies.