The BOSE's L1 Model II B2 with B2 Bass and ToneMatch Audio Engine is a portable amplification system for artists, DJs, and public speakers. This portable PA system has a clean tonal balance across the stage and throughout the room and can give up to 180° of horizontal sound coverage. For enhanced tonal balance, the Model II system uses Articulated Array speaker technology. The 24 vertically placed drivers on the loudspeaker have been carefully positioned to produce cleaner highs and a more constant tone throughout the room. The bundled B2 bass module gives you more control and power in the low end.
The T1 ToneMatch Audio Engine is also a digital multi-channel mixer that works with Bose L1 sound systems. The 4-channel engine has 100 ToneMatch presets, sophisticated EQ, and a suite of studio-class effects and professional-quality processors, as well as advanced controls that adapt to your voice or instrument. It's made to improve the sound of musicians that use any Bose L1 system. The tone-shaping tools quickly bring your voice and instruments closer to their natural sounds.