Pedals that stack with the Catalinbread Formula 51

Pigtronix Octava Micro

Pigtronix Octava Micro's high gain fills in what this transparent tone doesn't make on its own

EarthQuaker Devices Hizumitas

EarthQuaker Devices Hizumitas's high gain fills in what this transparent tone doesn't make on its own

Walrus Audio Monument CS

Keep Catalinbread Formula 51's warm voice out front: Walrus Audio Monument CS goes after Catalinbread Formula 51 in the signal chain so its low gain voice doesn't muddy it

Demeter Compulator

Demeter Compulator leans toward compressed, and that's a real, usable character to pair with

Eventide Modulated Delay

Put Eventide Modulated Delay after Catalinbread Formula 51 in the signal chain, clear of Catalinbread Formula 51's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Maxon AD10 Analog Delay

Keep Catalinbread Formula 51's warm voice out front: Maxon AD10 Analog Delay goes after Catalinbread Formula 51 in the signal chain so its analog warmth voice doesn't muddy it — goes in the amp's FX loop (or last, into a clean amp)