Sorry! but my goal wasn't that!
The test is ruining by itself!
What do you expect to hear?
the difference between "analog summing" and "digital summing"?
so the protocol of that experience is not precise enough
on digital stem your audio followed that CHAIN :
mic (of different track) -> preamp (of different tracks) -> ADC -> plug-ins algorithms -> digital summing in protools -> bounce to disk -> DAC (yours) -> speakers (yours)
on analog stem the audio followed that chain :
mic -> preamp -> ADC -> plug-ins -> digital summing -> DAC -> analog summing (with probable gain staging) -> ADC -> bounce to disk -> DAC (yours) -> speakers (yours)
So you don't compare analog summing with digital
you compare double conversion + analog summing with digital summing.
AND... was the DAC and ADC perfectly gain staged for the RE recording?
Aurora are good converters but in 24 bit , they achieve the best quantization when 0dbVU (0.775 volt) = -16dbfs
Pretty hard to believe that the 8 stems was perfectly match if the mix was made in the digital environment AND THEN route in analog summing for comparaison
So sorry, if i ruined the test, I will erase my post, but I think this comparaison is useless coz you don't compare what you want to compare
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