Sure if there are no measurable differences in noise or frequency response, there is nothing until somebody comes up with a better measurement.
An alternative and perhaps even purer way to look at it would be to inspect the digital packages and compare what goes in and what comes out. This too has been done, and the answer is: bitperfect. This is not a matter of belief or opinion but of fact, and not of alternative fact.
An alternative and perhaps even purer way to look at it would be to inspect the digital packages and compare what goes in and what comes out. This too has been done, and the answer is: bitperfect. This is not a matter of belief or opinion but of fact, and not of alternative fact.