DVP-AX12 features advanced DSP signal processing with 6 presets.These presets allow for the sound of the DVP to be tuned to the acoustic environment.The 6 presetsFLAT | MONITOR | SPEECH | BASS | PUNCH | LIVEcover most acoustic situations and environments.The rear panel also contains the 2-channel mic/line mixer. Inputs are available on XLR or 1/4″ jack connections with mic/line switching on Channel 1.In addition, the rear panel also contains the balanced XLR link output. This makes it easy to daisy-chain to another DVP-AX model or alternative powered speaker.