return {
    {
        gain = 0,
        name = 'preamp',
    },
    {
        gain = 0.03390694,
        name = 'eq',
        Q = 0.5,
        frequency = 32,
    },
    {
        gain = -2.017879,
        name = 'eq',
        Q = 0.5,
        frequency = 64,
    },
    {
        gain = -1.531226,
        name = 'eq',
        Q = 0.5,
        frequency = 125,
    },
    {
        gain = -4.570818,
        name = 'eq',
        Q = 0.5,
        frequency = 250,
    },
    {
        gain = -3.196762,
        name = 'eq',
        Q = 0.5,
        frequency = 500,
    },
    {
        gain = -3.075743,
        name = 'eq',
        Q = 0.5,
        frequency = 1000,
    },
    {
        gain = -2.922382,
        name = 'eq',
        Q = 0.5,
        frequency = 2000,
    },
    {
        gain = -3.457443,
        name = 'eq',
        Q = 0.5,
        frequency = 4000,
    },
    {
        gain = -3.327532,
        name = 'eq',
        Q = 0.5,
        frequency = 8000,
    },
    {
        gain = -1.992337,
        name = 'eq',
        Q = 0.5,
        frequency = 16000,
    },
    {
        gain = -1.987837,
        name = 'eq',
        Q = 0.5,
        frequency = 20000,
    },
    {
        name = 'lowpass',
        Q = 0.5,
        frequency = 9000,
    },
}