Is there any way to objectively measure things like soundstage? 2020-10-13 14:08:14 So, I'm in the middle of setting up my Raspberry Pi streaming server.Doing homework on DACs, and there are a LOT of claims about what constitutes good audio on a Pi.Reading discussions online, many people claim improved sound quality by adding a Pi HAT that does TOSLink vs using the USB ports when connecting to a DAC. Many claim that TOSLink vs USB to the SAME amp, TOSLink produces a better result.And they almost always claim that there is:1. Better soundstage2. Better instrument separation3. Better high end4. "More definition" to the musicSo, being a PITA about these things, I ordered a SPDIF HAT for my Pi to do an actual comparison.So, some questions. Can things like soundstage, instrument separation, and "more definition" be objectively measured in any way?And, my plan was to go USB to my DAC and then DAC to my PC and capture the audio as a FLAC. The go TOSLInk to my DAC, and then DAC to my PC and capture the audio. Once I have that, I can ABX them. Or even better, and I can use Audacity to get the delta between them and see if there is a difference at all between them, and what exactly the difference will be.