Westone
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◆Elite Series
-ES1: single driver custom musicians monitor
-ES2: dual driver custom musicians monitor
-ES3: the world's first true three-way custom musicians monitor
-ES3X: the premier true three-way custom musicians monitor
-ES5: the premier custom in-ear musicians' monitor
◇Universal Series
-UM1: single driver universal musicians monitor
-UM2: dual driver universal musicians monitor
-UM3X: triple driver universal musicians monitor
-Westone3: first true universal fit three-way IEM
-Westone4: Quad-Driver, True Three-Way Earphone