Features: The RS10 uses a custom Balanced Armature unit to restore the most realistic sound possible. The RS10 uses a 5-way scheme that closely matches the mid- to high-frequency response of the natural auditory response of the human ear under the monitor. The RS10 uses a passive unit that cushions air pressure, reduces the pressure of wearing, improves bass quality, and reduces hearing fatigue. Low impedance and easy to drive. 1 year warranty.