The RSM custom in ear monitor is a four-driver, three-way design with 2 woofers, 1 mid-range, and 1 tweeter. It has the power and presence to handle any stage, and the clarity and detail to enjoy while on the bus, plane or easy chair.
Brain Acid in-ear buds deliver a bigger, badder listening experience. Their small 9mm driver delivers clear detail and balanced tonal range, while the flexible ear cushions fit in a variety of different ears. They sit securely in your ear while blocking external noise