Grey wolf optimizer (GWO) is a very efficient metaheuristic inspired by the hierarchy of the Canis lupus wolves. It has been extensively employed to a variety of practical applications. Crow search algorithm (CSA) is a recently proposed metaheuristic algorithm. which mimics the intellectual conduct of crows. https://www.roneverhart.com/Tc-Electronics-M350-Multi-Effects-and-Reverb-Processor-M350-p36058/