Most EQ’s give you control over how much you roll-off but not how steep the roll-off curve is because their curve has been permanently fixed within the plugin.
However, the Scheps Omni Channel offers 6, 12 or 18 dB per octave filters, and the amazing FabFilter Pro-Q 3 offers even more control of the steepness of their filters.
I really like having a bit of control over the steepness of my filters. Sometimes I want a steep roll-off to basically remove everything below a certain frequency, but retain the low end above that frequency. Other times, and most times, really, I want a gentle roll-off curve so I can filter from a much higher frequency, sometimes even as high as 180 or 200 Hz.
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