The Yamaha HS8 is a 2-way bass-reflex bi-amplified nearfield studio monitor with 8" cone woofer and 1" 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, and XLR and TRS phone jack inputs accept balanced or unbalanced signals.