But from logic point of view, it's complete nonsense :) What we want to do is to amplify the source signal, not the partially amplified. It's like...
In most cases, when you connect a headphone amp to an interface you have double amping, because most interfaces have headphone amplifier already...
I use Sennheiser HD600 (300 Ohm) with Focusrite Scarlett 2i2 2nd gen since a few years. PreSonus states that this interface should be powerful...
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