Singers, musicians, and music lovers will love the Westone MACH 10, a pair of universal-fit in-ear monitors that feature a balanced clear top end and smooth bass response, well suited for onstage monitoring, vocalists, guitar players, keyboard players, drummers, and sound engineers. The earphones employ Westone’s balanced-armature drivers to deliver a frequency response of 20 Hz to 18 kHz at a sensitivity of 103 dB SPL.