The SE420 earphones from Shure provide top-quality audio in a sleek, compact, noise-isolating design that's ideal for use at home or on-the-road. Based on Shure's experience with professional in-ear monitors, each of the earpieces has dual TruAcoustic Microspeakers, in essence putting a separate woofer and tweeter into each ear for rich, detailed audio across the full frequency spectrum. A passive crossover between the armatures keeps highs and lows well-defined for an amazing sonic experience; perfect for high-quality recordings in lossless formats.

The included fit kit contains multiple sizes of ear sleeves, allowing you to find the perfect size for your ear and effectively reduce ambient noise by up to 90 percent so you can focus on your music. A detachable extension cable allows you to have as much or as little cable slack as you need. The 1/4" and airplane adapters make sure you can connect to virtually any audio source you come across, and a level attenuator brings high-output sources, such as airplane sound systems, down to a comfortable level. Keep it all in the included carrying case for easy, tangle-free storage.