The speckle phenomenon produced by coherent waves interfering with each other is undesirable in laser imaging systems. For each of the laser speckle reduction methods in the literature. it is difficult to reduce speckle to an extremely low level (< 3%) and also ensure good image quality. Therefore. https://www.roneverhart.com/Mesa-Boogie-Rectifier-4x12-Cabinet-Standard-Straight-p31703/