<hbox spacing="5" homogeneous="1">
    <vbox>
        <label param="amount" />
        <knob param="amount" ticks="0 0.0625 0.25 1 4" />
        <value param="amount" />
    </vbox>
    <vbox>
        <label param="voices" />
        <knob param="voices" ticks="1 2 3 4 5 6 7 8"/>
        <value param="voices" />
    </vbox>
    <vbox>
        <label text="Stereo Ph" />
        <knob param="stereo" type="3" />
        <value param="stereo" />
    </vbox>
    <vbox>
        <label text="Inter Ph" />
        <knob param="vphase" type="3" />
        <value param="vphase" />
    </vbox>
    <toggle param="on"/>
</hbox>
