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.
“My first quality IEM purchase was the Hifiman RE-400 when they first came out. I was used to low end Skullcandy sets at the time, and I really wanted to see what "reference sound" sounded like for a reasonable price of under $100. At the time, I felt anything above that price was absurd for me to purchase. From the first listen, the RE-400 showed me what quality sounded like. I was...” --bhazard