Catalinbread Formula No. 5 - гитарный эффект
https://pedalzoo.ru/catalinbread-formula-no-5.html

Catalinbread Formula No.5 Fender 50 -60x годов
https://guitar-gear.ru/forum/topic/3658-catalinbread-formula-no5/

The Four Knob Rat
https://beavisaudio.com/projects/fkr/History.htm
https://beavisaudio.com/Projects/FKR/images/MightierMouse.gif
https://guitarplayer.ru/equipment-craft/moderniziruem-proco-rat/
https://kjc-gtr-betta-taro.seesaa.net/article/201312article_12.html
https://kjc-gtr-betta-taro.seesaa.net/article/517704877.html?seesaa_related=category
https://www.freestompboxes.org/viewtopic.php?t=33729
https://barbarach.com/building-maze-runner-a-rat-clone-with-mods/

https://kjc-gtr-betta-taro.seesaa.net/article/201510article_1.html