Quote:
Originally Posted by
24-96 Mastering
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An analog setup doesn't solve the principal problem that there's one more stage of D/A in the test signals compared to the original source. You can't listen to an A/D without D/Aing it first. Whether your source is analog or digital, that problem remains the same.
In the absence of an ideal D/A converter, it seems the only way to take the variable out of the mix to some extent is to repeat the test using different D/A converters.
OK, let's set up an "ideal" set of input signals (at least two programs of different dynamic and corresponding spectral contents, each 2 minutes minimum) and define the test conditions! I mean:
- level to the ADC input;
- identical "filter" settings (phase-linear, steep, or whatever they offer identical!);
- NO manipulations of any kind over the input files! after the "agreement"!;
- perfect (as possible) power supply for every single unit;
- optimal interconnects, corresponding to manufacturers' requirements! NO optical connections, of course;
- double checked in-situ settings, i.e. test made at two (at least) different locations.
Please, add what you find appropriate to make it as objective as possible!