Understanding Earphone and Headphone Specifications

What specifications are important to understand when you're getting ready to upgrade or replace your earphones or headphones? If you're not a sound engineer, understanding the difference between frequency range and frequency response – or even the impedance requirements of your iPod or DJ rig – can have an impact on your listening experience.
In this short video, Matt Engstrom and Chris Lyons cover the basics of frequency range, frequency response, sensitivity and impedance as they relate to making the right earphone and headphone choices. They also discuss the one variable that makes everyone's experience unique and offer a final tip for choosing with confidence.