Generally speaking, whether you're able to maximize your DAC's performance is related to your transport quality. 5-disc carousels unfortunately, generally have worser quality than single disc transports. With that in mind, there are probably better transports out there for your DAC, but I think you will see a performance increase over the Denon. I say this without direct experience. I have not heard the DAC2 but have tried a different DAC with an older Denon and the Sony 555ES and heard an improvement.
