Features Recommended for lower-range instruments and vocalists Spatial DispersionTM and Articulated Array® speaker technologies Single-input power stand with retractable legs Four-channel ToneMatch® audio engine with studio-class effects Two B1 bass modules included Description Product Description The Double Bass Package is recommended for use as a bass guitar amplifier, and for kick drums and DJs. The premier Bose® L1 loudspeaker system for musicians with Bose smoothest, most consistent sound coverage and most powerful tone-shaping tools. Lightweight and modular, this sleek system fits easily into a car trunk and takes just a few minutes to set up. Bose premium sound system for musicians combines the L1 Model II system and T1 ToneMatch audio engine. This professional sound system provides wide coverage, smooth tonal balance and a suite of studio-class effects and tone-shaping tools. And it's packed with proprietary Bose technologies designed to improve your amplified sound. Sound advantages only from Bose The 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. Powerful multichannel audio engine Combining the T1 ToneMatch audio engine with your L1 concert speakers gives you exceptional amplified tone and sound processing capabilities. The compact, four-channel engine provides fingertip control of our largest library of ToneMatch presets. Just touch a button to make hundreds of precise refinements to the sound of instruments and microphones. The engine also features a complete suite of studio-class reverbs, additional effects and dynamics processing. It connects to the L1 Model II system via a single digital cable for quick, streamlined setup.