M-AUDIO Studiophile BX8 Reference Monitors for Musical Instruments Two-way near-field studio reference monitors 8-inch polypropylene curved cone woofer 1-inch natural silk dome tweeter 65W? HF Amplifier Power - 65W (EIA RS-490 dynamic power) amplification per speaker for total delivery of 130 watts Crossovers - 4th-order Linkwitz Riley for smooth frequency response