sweepable low-pass filter (500Hz to 20kHz, -6 or -12dB slope)
sweepable high-pass filter (20Hz to 400Hz, -12 or -18dB slope)
variable notch filter (fully sweepable between 20Hz and 20kHz)
The 565 Filter Bank module has circuits that are true to the musical
filters of the famed 215 module found in large format API consoles.