M-Audio BX5 D2 5" Active 2-Way Studio Monitor Speakers (Pair) Bi-amplified recording studio monitor with 70 watts of distributed power Class A/B bi-amplification with precision crossover lets each speaker work effortlessly to reproduce your mix with stunning accuracy 5-Inch low-frequency transducer with Kevlar cones for rich, defined lows 1-Inch high-frequency drivers with natural silk domes and integrated waveguides for smooth, clear highs and a wide sweet spot Rear porting for extended low-frequency response while reducing air turbulence Magnetic shielding eliminates interference with other electronic equipment; video monitors, vintage outboard audio processors, etc Balanced XLR and 1/4 inputs let you connect to a wide range of audio sources