return {
    {
        gain = 0.033784039318562,
        name = 'preamp',
    },
    {
        gain = 2.320173,
        name = 'eq',
        Q = 0.5,
        frequency = 80,
    },
    {
        gain = 1.019961,
        name = 'eq',
        Q = 0.5,
        frequency = 500,
    },
    {
        gain = 0.7271804,
        name = 'eq',
        Q = 0.5,
        frequency = 6000,
    },
}