Review on Beyerdynamic DT 990 PRO Open Studio Headphones - High-Quality Sound for Professionals by Toyofuku Hideo ᠌

You must understand why you are buying these headphones! This is not multimedia, where you will enjoy the sound, these are rather specific ears that help professionals in working with sound. Out of the box, there is a very curved frequency response, which allows you to well (as far as headphones can do) rebuild the bottom and deal with the tops in the mix. If you want to get real pleasure from listening to music, or use them as a tool for general mixing, then you need to calibrate, for example, using the Sonarworks Reference (there is just a chair for them). After calibration from listening to one only delight.