The amp emulator or the legendary Royal Albert Hall Led Zeppelin performance in 1970. You can watch the video on YouTube and I tell you what it gets pretty close to sounding like it through a cleanish amp
The Catalinbread RAH was named after Led Zeppelin's 1970 performance at the historic Royal Albert Hall, so named for Catalinbread's effort to capture the sound of that show in a pedal. Its overdrive is inspired by Page's playing during the RAH performance and a three-knob tone circuit modeled after the "Jimmy Page" Hiwatt. Catalinbread's RAH overdrive is extremely dynamic, reacting to your pick attack and how you modify your guitar's controls. Hop in a time machine and take it back to '70s Royal Albert Hall with the Jimmy Page-inspired Catalinbread RAH.
