It's an interesting conversation. You could literally say that about every single part inside of a DAC. Dubious as to whether or not 99.9% of people can hear the difference in a well designed DAC between better power supply components, better diodes, capacitors, resistors, op amps, dac chip, etc... But obviously by that logic, at some point you end up with a completely different product.
I agree that sometimes in a well designed product, the sum is greater than the individual parts. Having said that, I'm on board for maximizing the potential of this thing!