Boost your performance with the L1 Model II system, BOSE's most advanced portable amplification system for musicians, DJs and public speakers. The loudspeaker delivers 180 degrees of horizontal sound coverage and smooth tonal balance-across the stage and throughout the room. Includes one B1 bass module for enhanced low-end performance.Like the original, award-winning Bose L1 system, the Model II sound system is an all-in-one innovation that replaces conventional monitors, mixers and PA speakers. And this professional sound system is packed with proprietary BOSE technologies designed to improve your amplified sound.Sound advantages-only from BOSEThe system's breakthrough loudspeaker produces wide, uniform sound coverage of nearly 180 degrees-onstage and throughout an audience of up to several hundred-with little dropoff in volume and tone. The Model II system also features Articulated Array speaker technology for better tonal balance. The loudspeaker's 24 vertically mounted drivers are precisely angled to create clearer highs and more consistent tone in the room. Even people off to the sides of these stage speakers enjoy well-balanced, detailed sound.Deep bass from small enclosuresThe B1 bass module is our more portable bass option. It is considerably lighter and smaller than conventional bass bins required for the same performance. And it ensures more accurate amplification of lower notes for most voices and instruments.With the L1 Model II system you can power up to two B1 bass modules or one B2 module on a single power stand. And the optional PackLite power amplifier lets you add a second B2 bass module for maximum low-end power.Easy and efficientThe L1 Model II power stand weighs only 24 pounds, and its four retrac