Musicians, DJs and public speakers: boost your performance with the L1 Model II system, the most advanced portable amplification system from Bose. It replaces conventional monitors, mixers and PA speakers and is packed with proprietary Bose technologies designed to improve your amplified sound.Sound advantages--only from BoseThe system 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 loudspeaker's 24 vertically mounted drivers are precisely angled to create clearer highs and more consistent tone in the room, even for people off to the sides. The high-performance B2 bass module delivers powerful low-frequency output just right for larger audiences. It includes three level settings for output flexibility. You can power one B2 bass module on a single L1 power stand. The optional PackLite power amplifier lets you add a second B2 bass module for maximum low-end power.