<hbox spacing="5" homogeneous="1">
    <vbox>
        <label param="blend" />
        <knob param="blend" type="1" />
        <value param="blend" />
    </vbox>
    <vbox>
        <label param="drive" />
        <knob param="drive"/>
        <value param="drive" />
    </vbox>    
    <vbox>
        <label param="mix" />
        <knob param="mix" ticks="0 0.5 1" />
        <value param="mix" />
    </vbox>
    <vbox>
        <label param="p_freq" />
        <knob param="p_freq" ticks="80 800 8000" />
        <value param="p_freq" />
    </vbox>
    <toggle param="bypass" icon="bypass"/>
</hbox>
