Perhaps I’m in the wrong forum to ask but…how’d they run straight-up, no DAC/Amp? I.E. How was the ‘control variable performance’ if we want to make it sound scientific. I have tried the 770s and 990s through a stack and boy they sing, but often when mixing or tracking, one doesn’t always have a nice stack at their disposal, especially portable, where headphones are most useful to engineers.
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