The Pro X50 redefines and elevates the popular UM Pro 50 and is the flagship model of Westone Audio’s Pro X In-Ear Musicians’ Monitors. Featuring five proprietary, balanced-armature drivers with a 3-way passive crossover, each driver is designed to reproduce a specific part of the frequency range: lows, mids, and highs.For the most discerning musicians who demand unparalleled sonic detail and clarity, the Pro X50 creates a sound that is totally immersive by combining one low-frequency driver with two mid-range and two high-frequency drivers. Thunderous lows combine with rich, detailed midrange and shimmering articulate highs in a balanced and harmonious presentation that meets the demands of the biggest names in the music industry. The Pro X50 incorporates all the innovations and expertise that Westone Audio has developed in almost 60 years of designing and manufacturing products for the human ear. Westone Audio’s proprietary silicone and comfort foam eartips are provided in five different sizes to ensure a superb fit and provide superior noise isolation. Ambient sound levels are reduced an average of 25dB, making the Pro X50 the perfect choice for use on stage or other noisy environments. The Pro X50 is ideal for serious musicians and aficionados, and is especially suited for those looking for dense, bass-rich low end.