Lots of good advice above me.. but if running all that is what you want to do...
A dsp would be the only option I know of...I've never seen a deck with enough outputs...
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Dayton Audio DSP-408 4x8 DSP Digital Signal Processor for Home and Car AudioTake Control of Your Sound Ease of use has always had its place in the consumer electronics industry. Dayton Audio has now brought to market a digital signal processor (DSP) that combines versatility, incredible sound...
A dsp would be the only option I know of...I've never seen a deck with enough outputs...