It is not possible to adjust the equalizer settings of the Citation ONE/100 speakers.
These Citation speakers are tuned by our expert acoustic team, and tested in double-blind listening tests, to ensure that every detail and nuance of an audio track will be heard in the same way as the artist intended it. To ensure this consistent listening experience we do not provide any EQ sound tuning options.
If you would like to change the treble- or bass level of your Citation 200 you can read the instructions here.
With the Citation 300 and 500 you can adjust the bass level via the display (menu: options) of the device.