Legacy Vs Modern

Hello all, quick question for the group, is using a "higher end" preamp and utilizing the 5.1 inputs for modern codecs better, or should I concentrate on more modern electronics?  I have been posting a fair amount for me, and with some guidance purchased an ADA PTM-6150 for an amp, my plan is to run my Pioneer Elite SC37 for pre/pro duties, but I have a line on an ADA Cinema Rhapsody Mach II for under $200, would I see any benefit, or would I see worse sound with a legacy pre/pro??