The Green Filter is based on a Passive filter, both high and low cut are available in a single instance. Green Filter acts as -20db (approx) shelf rather than a complete cut. This offers a unique sounding library, this can be seen in the pics below.

 

Features-

• Low cut 70, 100,150,250,500,1000,2000,3000,5000,7500hz
• High cut 10,8,6,5,4,3,2,1khz and 500,250hz
• 3k harmonics with drive knob to increase harmonic levels
• 4 sample rates, 96,88,48,44
• Jpn n4/n3 skin

Low cut

High cut

Combining low and High cut filter creates unique notch shapes, as seen below-