A level adjustment device for adjusting the sound levels of a group of audio channels, the audio channels comprising at least a first audio channel and a second audio channel, the first audio channel and the second audio channel being associated to respective video channels, the first audio channel and the second audio channel being rendered simultaneously, the level adjustment device comprising: - a user controlled selection means (14, 16) for selecting one of the first audio channel and the second audio channel as a main channel in response to a user input (Sel), the other being designated as an auxiliary channel; and - level adjustment means (11, 12) for adjusting the sound levels of the main channel and the auxiliary channel, the level adjustment means comprising: - a user controlled level adjustment unit for receiving a user control signal for adjusting a sound level of the main channel according to the user control signal so as to provide a sound level adjusted output audio signal for the main channel - automatic level adjustment means for adjusting the sound level of the auxiliary channel relative to the main channel in response to a control signal (cntl) being identical to, or being derived from, the output audio signal of the user controlled level adjustment unit, said automatic level adjustment means being arranged to adjust the ratio of the sound level of the auxiliary channel relative to the sound level of the main channel according to the control signal (cntl). - a user controlled selection means (14, 16) for selecting one of the first audio channel and the second audio channel as a main channel in response to a user input (Sel), the other being designated as an auxiliary channel; and - level adjustment means (11, 12) for adjusting the sound levels of the main channel and the auxiliary channel, the level adjustment means comprising: - a user controlled level adjustment unit for receiving a user control signal for adjusting a sound level of the main channel according to the user control signal so as to provide a sound level adjusted output audio signal for the main channel - automatic level adjustment means for adjusting the sound level of the auxiliary channel relative to the main channel in response to a control signal (cntl) being identical to, or being derived from, the output audio signal of the user controlled level adjustment unit, said automatic level adjustment means being arranged to adjust the ratio of the sound level of the auxiliary channel relative to the sound level of the main channel according to the control signal (cntl). - a user controlled level adjustment unit for receiving a user control signal for adjusting a sound level of the main channel according to the user control signal so as to provide a sound level adjusted output audio signal for the main channel - automatic level adjustment means for adjusting the sound level of the auxiliary channel relative to the main channel in response to a control signal (cntl) being identical to, or being derived from, the output audio signal of the user controlled level adjustment unit, said automatic level adjustment means being arranged to adjust the ratio of the sound level of the auxiliary channel relative to the sound level of the main channel according to the control signal (cntl).