how to get the goregrind very low guitar tone

[ame="https://www.youtube.com/watch?v=GlnLuuXRzNQ"]https://www.youtube.com/watch?v=GlnLuuXRzNQ[/ame]

The Day Everything Became Nothing are an Aussie band influenced by goregrind bands.
Their guitar sound is simply drop A tuning Mesa Three Channel Head, Mesa Cab with an overdrive pedal used as a boost.