Westone UM 3X In-Ear Musician's Monitor, Universal Fit Earphone with Removable Cable, Clear, 79292 Highest-performance universal fit musicians' in-ear monitor Uses 1 bass, 1 mid-range and 1 high frequency driver for the most dynamic sound reproduction in a universal fit in-ear monitor 3-way crossover splits the audio signal into separate frequency bands that can be routed to each micro driver EPIC removable cable has ultra supple braided design insures comfort and resists tangles True-Fit sound port delivers maximum comfort and in-ear coupling for dynamic transfer of sound