<hbox spacing="5" homogeneous="1">
    <vbox>
        <label param="master" />
        <knob param="master"/>
        <value param="master" />
    </vbox>
    <vbox>
        <label param="transpose" />
        <knob param="transpose" type="1"/>
        <value param="transpose" />
    </vbox>
    <vbox>
        <label param="bass_gain" />
        <knob param="bass_gain" />
        <value param="bass_gain" />
    </vbox>
    <vbox>
        <label param="treble_gain" />
        <knob param="treble_gain" />
        <value param="treble_gain" />
    </vbox>
</hbox>
