>>21970I forgot to mention that, although you think you can boost a little more below 80Hz because we're not as sensitive to distortion that low, you run the risk of pushing the speaker too hard and lowering the lifespan of the speaker. Because although we're less sensitive to distortion down low, the driver and voice coil needs to physically move a lot more to reproduce those frequencies. It's more wear and tear, but also can produce audible distortion elsewhere in the frequency range due to the fact that it's almost guaranteed to be a single speaker trying to produce the full range of frequencies. Some IEMs use multiple drivers and a handful of headphones have experimented with multiple drivers. But the few headphones that have ever attempted this suck because they're almost never smart enough to cross the drivers over at 80Hz. It's weird how it's so avoided in high end desktop headphones that are already bulky and suck a lot of power, because even really good headphone drivers are stupidly cheap compared to good speakers.
Anyway, just listen very closely for any weirdness when you use EQ to boost. With some headphones you can get away with more, and with others, less.