So I've been messing about with equalizer APO and foobar2000. I am using a Schiit Modi 3+ DAC and a JDS Labs Atom amp, and I have a dt990 pro 250ohm, a dt990 special edition 600ohm (basically a dt990 premium 600 ohm), and a Senn HD600. I had some questions about how all the processing works:
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