A new breed of IEM. With a pair of Sennheiser IE 400 Pro In-Ear Monitors, you'll wonder how you ever performed without them. Suitable for live, studio, and everyday listening applications, the newly-developed 7mm dynamic wideband transducers deliver high-resolution audio with incredible impact and clarity. By improving your ability to hear the things you want to hear, you can focus on delivering a performance you can be proud of. Transparent mids, crisp highs, and rich lows - the IE 400 Pros ensure your sound is balanced and faithful. TrueResponse technology prevents acoustic stress, resulting in an ultra-low distortion factor of 0.08-percent, as well as the elimination of overlapping frequencies and resonance peaks. Combined with their ability to reach astonishing SPLs without the clipping that would occur with traditional IEM designs, the Sennheiser IE 400 Pro In-Ear Monitors give you that studio sound, whether you're on stage, or listening to your favourite music at home. With beautifully-subtle transparent housings, the IE 400 Pros boast an ultra-compact construction designed to fit you. Complete with both silicone and viscoelastic tips that comfortably adapt to the depth and structure of your ear canal, these innovative in-ear monitors remain secure and comfortable for hours on end. A professional design with phenomenal capabilities - the Sennheiser IE 400 Pro IEMs are your ticket to a better listening experience.