Sonnox Oxford EQ (HD-HDX)The Sonnox Oxford Dynamic EQ Plug In is a transparent and musical mastering tool designed for fixing problem frequencies when it is not possible for the engineer to go back in the mix. Traditional equalization may work well in certain parts of the song but not in other parts. This plug in addresses this issue by cutting boosting frequencies only when the signal reaches a set threshold, achieving the desired effect without the need for time consuming