The FreeFilterBanks allow boosting or attenuating individual frequency bands; each frequency band can freely be set from 0 to 24000 Hertz. 

ffbA

dspLoad 25.40/22.30/22.30
4-pole bandpass filters for all 12 bands.

ffbB

dspLoad 13.20/9.90/10.00
4-pole bandpass filters for all 5 bands.

ffbC

dspLoad 34.10/30.80
6-pole bandpass filters for all 12 bands.
The lowest and highest bands are lp resp. hp filters by defaultm, but can also be switched to bandpass (“BPFonly”).

Filter
Lp
Lp2
Bp/Br
Hp
Multi
Voc&Comb
AllPass
EQ
FFB
Crossover
Special

SpaceF
Zarg