Yamaha HS Series HS8W - 8 Inch 2-Way 60W Bass-Reflex Bi-Amplified Nearfield Studio Monitor (Pair) in White - 2-way bass-reflex bi-amplified nearfield studio monitor 8-inch cone woofer and 1-inch dome tweeter 38Hz - 30kHz frequency response 75W LF plus 45W HF bi-amp system for high-performance 120W power amplification Room Control and high trim response controls XLR phone jack input accept balanced or unbalanced signals