How to adjust the Volume, Bass or Treble

Adjust the loudness with the volume knob on top of the speaker, or by using the Marshall Voice app. The default or unity level is five (right in the middle).

Adjust the low-frequency audio output by turning the bass knob on top of the speaker or using the Marshall Voice app. The default position is five (right in the middle), also known as flat or unaffected EQ.

Turn the treble knob on top of the speaker or use the Marshall Voice app to adjust the sound for clarity and shrill high frequencies. The default position is five (right in the middle), also known as flat or unaffected EQ.