Irons’ pedalboard was built by Awolnation’s guitar tech, Jovaughn Clay. The chain starts with a Kemper footswitch and goes to a Boss DS-2 Turbo Distortion. “I use that mainly for the heaviest tones, the most brutal thing you can imagine,” Irons says. Next is an Electro-Harmonix Holy Grail reverb, a Strymon TimeLine delay, an Electro-Harmonix POG2, a Boss OC-3 Super Octave, two Boss digital delays (a DD-5 for slapback and a DD-6 for feedback), a Boss Tremolo TR-2, an Electro-Harmonix Big Muff (he uses on the song “Hollow Moon”), a Boss tuner, and an Ernie Ball volume pedal.
Miller’s Collings runs into a Grace Design ALiX preamp, which helps him fine-tune his EQ and level out pickups with varying output when he switches instruments. For reverb, sometimes he’ll tap the 
