https://www.reasonstudios.com/shop/rack-extension/allpasser/
Allpasser is a free and versatile allpass filter bank for Reason. Make phasers and other sorts of filtering effects, and smear transients to your heart's content to get that deliciously punchy low end. With a total of 128 stackable allpass filters with feedback, two LFOs, an envelope follower and a modulation matrix, Allpasser can go from mild to wild.
