Musicians, DJs and public speakers: boost your performance with the L1 Model II system, the best portable amplification system from Bose. It replaces conventional monitors, mixers and PA speakers with proprietary Bose technologies designed to improve your amplified sound.Sound advantages--only from BoseEnjoy 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 clear highs and consistent tone in the room, even off to the sides. The four-channel T1 ToneMatch audio engine has a library of presets, intelligent zEQ and professional quality effects and processors to enrich the sound of voices and instruments. The B1 bass module is considerably lighter and smaller than conventional bass bins and ensures accurate amplification of lower notes for most voices and instruments. You can power up to two B1 bass modules (or one B2 module) on a single L1 power stand.Easy and efficientThe power stand weighs only 24 pounds, and is easy to transport and set up. All of the system"s components are built to handle the road. The loudspeaker has a rugged, reinforced grille, and each package includes padded carrying bags for major components.What"s in the Box L1 model II with B1 bass: • L1 Model II power stand and cord • L1 Model II Cylindrical Radiator loudspeaker (top and bottom) • B1 bass module and cable • Power stand carrying bag • Loudspeaker carrying bags • B1 slip cover T1 ToneMatch audio engine • T1 ToneMatch audio engine and cable • ToneMatch engine protective cover and carrying bag • ToneMatch engine mounting bar and carriage