Pedals that stack with the Keeley El Rey Dorado

Dr. Scientist Frazz Dazzler

Run Dr. Scientist Frazz Dazzler into that transparent platform and it finally gets some low gain

Ashdown Geezer Butler Signature

The transparent tone has headroom to spare — Ashdown Geezer Butler Signature gives it low gain to fill it with

Walrus Audio Lillian

Run Walrus Audio Lillian after Keeley El Rey Dorado in the signal chain, clear of Keeley El Rey Dorado's own gain stage

Boss BC-1X

Boss BC-1X's own compressed character is the real reason this is worth trying

Strymon BigSky

Run Strymon BigSky after Keeley El Rey Dorado in the signal chain, clear of Keeley El Rey Dorado's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Boss RV-5 Digital Reverb

Put Boss RV-5 Digital Reverb after Keeley El Rey Dorado in the signal chain, clear of Keeley El Rey Dorado's own gain stage — goes in the amp's FX loop (or last, into a clean amp)