Guitar amp cabinets house the speakers that produce the sound from an amp head, with sizes and speaker configurations impacting the overall tone and projection. They became widely used alongside amp heads in the 1960s, when larger venues required more powerful sound reinforcement. Notable manufacturers include Marshall, Mesa/Boogie, Orange, and Fender, with classic models such as the Marshall 1960A 4x12, Mesa/Boogie Rectifier 2x12, Orange PPC212, and Fender Bassbreaker 1x12. Cabinets vary in speaker size, ranging from 1x12 configurations for smaller venues to massive 4x12 stacks for high-powered rock and metal performances. Players choose cabinets based on their tonal preferences, balancing speaker response, wattage handling, and portability.