Developed to reproduce large and enveloping sound, the Pro X20 has the range and output for any stage condition. Westone Audio’s proprietary silicone and comfort foam ear-tips 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 X20 the perfect choice for use on stage or other noisy environments. The Pro X20 is ideal for musicians and music lovers looking for more low end in their mix.