what a zapco dc has to offer, no EQ can compare. you will end up spending more money on processing and an amplifier, when you could go with a better setup thats all in one unit.I don't think sonically you will be able to tell a difference btween what you have and many other amps. The Zapco DR amp does give you a bunch of equalization and such, but you could just buy an EQ for that with your current amps. If you just lust for better I would go with Zapco, Audison, Brax, Dls
mcintosh, brax, audisen, zapco,tru audio, ample audio older us amps, memphis mclass (the mclass verrry good for the $$ if you're ona budget) and alll the other ones listen