The term 'band equipment' can refer to a variety of items used by musicians in a band. Two of the most common pieces of equipment are amplifiers and amplifiers, which are abbreviated as 'AMP' and 'AMPS' respectively. An amplifier is an electronic device that increases the volume of an audio signal, while an amplifier is a device that contains multiple amplifiers. Both of these pieces of equipment are essential for bands to produce sound at a higher volume.