The Evo One Room Compensation settings are designed to compensate for the type of room you are listening to the Evo One in.
In a room with lots of hard surfaces, for example, sound waves may reverberate and cause your music to sound different to the way the artist intended. By telling the Evo One about your room, audio processing can limit its effects on your listening.
You can adjust the Room Compensation settings in the StreamMagic app by selecting 'Room Settings' in the app home page, and then 'Room', which will take you to the section below. Once you've enabled 'Room Compensation', you can then move the slider to a position that best represents your listening room.