Also known as a cab, a guitar cabinet is an enclosure that houses an unpowered speaker which will receive power from an external amplifier. Cabs will vary in size, depth, material, and number of speakers. The most common configurations are 1, 2, and 4 speaker cabinets. Cabs can have a significant impact on tone. Therefore, it is important to consider the quality of a cab just as much as the amplifier that will be used to power it.