Klipsch XR8i HYBRID High clarity Headphone As one the most affordable hybrids on the market, XR8i combines the best of both worlds of drivers - dynamic and balanced armature. XR8i features a true downward-firing subwoofer to extend authentic bass into the single-digit frequencies. If you like lots of bass but can't sacrifice on clarity, this is the in-ear for you. High clarity and full bass hybrid design. A home theater in your eyes.