Parametric EQ
The PARAMETRIC EQ block — sculpt tone the direct-signal way: drag a band ON the response curve (left/right = frequency, up/down = gain), scroll a band for its Q, double-click the curve to add a band, right-click to remove. Alt-drag for a fine move, Shift-drag to sweep the frequency at a locked gain. A FabFilter Pro-Q-class multi-band EQ over a LIVE spectrum, so you hunt the frequency that's wrong by ear AND eye and cut or boost it right on the sound's own picture — with an Output trim to match levels after. The kernel designs the matched (Vicanek) filter coefficients at f64 — the curve you drag IS the filter you hear (accurate near Nyquist where a stock EQ cramps).