Etymotic Research’s ER Series of IEMs is renowned for its accurate sound reproduction—and these ER2 models take that excellent reputation to a lower price point. A great entry to the company’s acclaimed house sound, they’re tuned with very tight tolerances to remain true to the experience of a live performance. The high-quality metal earpieces have a blue anodized finish, and the detachable 4-foot cable allows for easy replacement. With 35-plus decibels of external noise isolation and an assortment of ear tips to choose from, you can enjoy your music and block out everything else. These two models are nearly identical—if you like a bit more bass, go for the ER2XR.