Hows your sound equalizer anon? are you a pure person who

Typically a boost on the mid low range.

Flat for headphones always. The only time I would use an equalizer is with speakers, because you need to, to get the most out of them. Headphones are designed differently because they're against your ears, which are a very small and enclosed environment where there are fewer variables. A room has many more reflection points with many different levels of sound absorption and reflection, so audio processing is needed to compensate.