6-channel DSP preamp

I want make 6-channel DSP preamp for 3-way active loudspeaker. I asked Hypex that could they make that kind of machine (there should be 6-channel volume, eq, delay, crossovers, digital and analog inputs.). They sayed that there is their DLCP that will be good for this kind of construction. I want end up whit result that might be similar that genelec 8260A Genelec Oy - Genelec 8260A

Would it be possible to build that 6-channel DSP preamp with products that are available nowadays.