First comment:
It's no active filter. It's a variable passive RC filter with a succeeding gain stage. If you omit the gain stage, you don't change the filter operation.
Secondly, some component values like 0.022 pF are surely wrong.
It's looks like one of these classical guitar amp tone controls (if you imagine tubes instead of OP amplifiers). The circuits are very arbitray and don't follow any tone control prototype. In my view, the control capability is poor compared to modern tone controls like parametric equalizers (multiple filters tunable in terms of frequency, gain variation and possibly Q) or also a standard active tri-band tone control (bass, mid, treble).
To evaluate the circuit operation (presumed you have reasonable component values), you can utilize AC analysis of a SPICE variant, e.g. free LTSpice.