The Lamb is an op amp based overdrive circuit with soft clipping diodes placed inside the feedback loop of the op amp. While it is it's own unique circuit, it can be closely compared to similar type circuits like the Marshall BluesBreaker, Analog Man King of Tone, and JHS Morning Glory, etc.
Demo by gearfever (EN)
Demo by Hey Worship Leader (EN)
Demo by JET Pedals (EN)
Demo by Ambient Endeavors (EN)