When shopping for firewire audio interfaces, there are several important things to keep in mind. The best interfaces will provide you with ample audio inputs, solid A/D conversion, low latency, low jitter, better bit depth, better sample rates, and better overall sound quality for your recordings. There are several great choices from folks like MOTU, Digidesign, Presonus, and Focusrite, but some of our favorite firewire audio interfaces are the Apogee Duet, PreSonus FireBox, and the Digidesign Mbox 2 Pro. So if you are in the market for a new one, we encourage you to check out the reviews on these popular models and see which firewire audio interfaces are best for you.