Yamaha - HS5I Powered Studio Monitor 2-way bass-reflex bi-amplified nearfield studio monitor with 5" cone woofer and 1" dome tweeter. Mounting points on 4 surfaces are available. 2-way bass-reflex bi-amplified nearfield studio monitor with 5" cone woofer and 1" dome tweeter 54Hz - 30kHz (-10dB), 74Hz - 24kHz (-3dB) frequency response 45W LF plus 25W HF bi-amp system for high-performance 70W power amplification ROOM CONTROL and HIGH TRIM response controls XLR and TRS phone jack inputs accept balanced or unbalanced signals Mounting points on 4 surfaces Packaging single