Via the MIY app using MOSAYC - "Attention to Detail with Mimi Sound Personalization" you can go though a hearing test and create your individual hearing profile, which is uploaded to the earphones afterwards. This way, you can enjoy personalized audio that fits your hearing, no matter which playback device you use.
You can update this process anytime.
MOSAYC is available from software version 1.1. An update is easily possible via the MIY app. More information can be found in the FAQ How can I do a software update?