@rodman99999
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#2:
You are wrong about DSP not making up for problems in the signal.
Yes you can fix many problems with DSP there are programs like Isotope RX that can pull out sounds in front of other sounds using machine learning that was not possible even 5 years ago. Today vocalists routinely use Auto Tune or other programs to even make the singer bearable, or use with great singes if you want to go into a key change earlier or make a change while the artist isn't available. DSP is super important on even classical recordings, you can use very live mics (wider polar pattern) that are further from the musicians (to get a better image) and then use DSP to take the unwanted ambience (or air condition) down. Digital DSP sounds generally perfect today with no phase problems or latency as old DSP units introduced.