Why don channels 3 and 4 have presets, XLR inputs and line outs like channels 1 and 2?
The L1® Model I system was designed with an individual in mind, as an extension of your musical instruments. For this, we have provided two primary inputs, 1 and 2. These inputs were intended to receive signal from an instrument, such as a guitar or keyboard, and a voice. Each musician’s instrument and voice can be heard from his or her own system. The remaining channels, though still suitable for direct instruments, can be used for CD background music for playback in between performance sets.