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.
“ I bought these from an Ebay seller for 6.98 USD after reading good reviews online, and on the Head-Fi forums, but found no official review, so I'll add my thoughts. I was looking for an above average set of in-ear phones that offered good value for under 20 USD. They met my needs and I would buy them again for the same price, however, they only lasted 3 months of normal gentle...” --CEddy10165