Do you want to see. I have an ADC with my EMU1212M and the the Stealth DC-1 to feed it and also Mic measurement setup.
(1) Stay away from the measurement mic. It is difficult to repeat the same measurement that involves acoustics and get repeatable results with high precision. In fact in some acoustical measurements I've made with real-time readout, I've seen the parameter shift on their own before my very eyes.
(2) Instead, try some electrical measuremrents. One of the easiest to do is as follows:
(a) Obtain the Audio Rightmark Program (shareware - unlimited use for free)
(b) Use it to create a test fil .wav files - menu option. It will create test datasets up to 24/192.
(c) Use audacity to create a file with a 1 KHz -1 dB FS file for setting levels
(d) Set up a system with standard CAT5 wiring as in integral part of the system. For example, identify a piece of wire that you can replace with the *High performace" wire easily and at will. Use your 1 KHz sine wave file to set levels.
(e) Record your baseline performance as a .wav file
(f) Replace the wire you identified with the *high performance* wire.
(g) Repeat step (e) creating a second file.
(h) use the Rightmark program to analyze the two files.
(i) report any differences in the Rightmark program's analyses of the two files that you recorded.