MX in-ears sound significantly better than traditional headphones or earbuds and works with any iPod, iPhone, iPad or mp3 player. In-ear headphones are also commonly used by professionals to monitor sound mixes; this prevents feedback from stage monitors and isolates the artists or producers from audience noise.MX In-ear headphones help to ensure safe listening levels since they block ambient sounds so thoroughly you won’t have to turn the music up loud just to overcome noisy environments. In-ear headphones are miniaturized headphones that fit into and ‘seal’ the ear canal, much like standard earplugs.