Passive bandpass filters are an obsession of mine, so it was just a question of time until AudioThing and me would make a plugin of the special subset called octave filters. Octaves is out on now: https://www.audiothing.net/effects/Octaves/
My Music: http://hainbach.bandcamp.com
Newsletter: https://hainbachmusik.com/newsletter
MY SIGNATURE SOFTWARE:
THE HAINPACK IS HERE: https://www.audiothing.net/bundle/hainpack/
GRANULAR SYNTH: https://apps.apple.com/de/app/fluss-granular-playground/id6443472888
CONNECT: http://reddit.com/r/hainbach
BUY THE GEAR I USE (EU):
https://redir.love/thocf/n2lm9oo2ym
BUY THE GEAR I USE (US):
https://bit.ly/3nsnE9Q
(affiliate links, I get a few % if you buy through them)
BUY THE GEAR I USE (UK)
https://www.gear4music.com/blog/what-gear-does-hainbach-use/