@askDNA I will also take this moment to stan for a project called "AutoEQ". It's a public repository of frequency response data about every pair of headphones you can imagine that is then used to create EQ presets that counter any offset from "studio flat" output. Long story short, it makes any headphones output audio as close to the same bass/mid/treble balance as possible to what the audio engineers who created the music intended, removing any differences from the specific device.
On Windows it's implemented using software called EqualizerAPO + HeSuVi. On Android you would use the app Wavelet. Not sure if it's possible on iOS