The R03 is an up-market professional-level earphone from well-known Chinese manufacturer ViSang. With quality materials used all-around, the build of the R03 is as venerable as the sound. Metal shells and a Cu-Ag alloy cable ensure longevity while the 10.7mm dynamic driver delivers crisp, powerful, and engaging sound. A uniquely patterned cable sheath provides flexibility and reduces cable contact noise while keeping the cord from tangling and reducing snags. The included soft silicone and foam ear cushions provide plenty of isolation from outside noise and remain comfortable for hours, maintaining a perfect seal and allowing for superior bass response and detail reproduction. Though tuned for increased bass, the R03 sound involving and natural at all frequencies, providing reference-level audio quality without giving up musicality. Whether you are an audio professional or just a music junkie, the ViSang R03 will take your listening experience to the next level.