You may not know it, but these single-driver earphones outperform many dual-driver earbuds on the market. How do they do it? It's all thanks to Shure's innovative MicroDriver technology, an advanced miniature driver design that lets these fantastic headphones reproduce sound from 22Hz all the way up to 17.5kHz with astonishing accuracy. They're also super-comfortable, yet fit tightly enough to block out 37dB of outside sound. That's the kind of reliability that you can really depend on when you're on stage and the way you hear your mix is absolutely critical. Even if you're just looking for a set of earbuds to jam out to your iPod with, you're going to love Shure's SE215s.