Sennheiser HD800S: https://www.headphones.com/products/sennheiser-hd-800-s-dynamic-open-back-stereo-headphones?_pos=2&_sid=e84056ec5&_ss=r
HD800S Review by Chrono: https://www.youtube.com/watch?v=hFSdovbI7Yk
Chrono's EQ Presets: https://forum.headphones.com/t/chronos-eq-profile-compilation/7091?u=chrono
Become an expert on headphones: https://www.headphones.com/pages/research
Learn about headphone measurements and frequency response: https://www.headphones.com/pages/measurements-and-frequency-response
How frequency response impacts sound signature: https://www.headphones.com/pages/how-frequency-response-impacts-sound-signature
How to EQ your headphones:
https://www.youtube.com/watch?v=FRm9qTmQHKo&t=8s