Why a DAC matters less than people say, and an amp sometimes matters more
Digital-to-analogue conversion has been a solved problem for a while. Getting enough voltage into a high-impedance headphone has not.
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Notes on gear, rooms and the specifications worth comparing.
Open-back, closed-back, and the room you listen in
The enclosure decides more about your experience than the driver does, and the right answer depends entirely on where you are sitting.
What impedance and sensitivity actually tell you
Two numbers on every headphone box, one of them widely misread. Here is what each one predicts and what it does not.