A bass amplifier is a musical instrument electronic device that uses electrical power to make lower-pitched instruments such as the bass guitar or double bass loud enough to be heard by the performers and audience. Bass amps typically consist of a preamplifier, tone controls, a power amplifier and one or more loudspeakers ("drivers") in a cabinet.
An Ampeg SVT cabinet with eight 10" speakers, with a separate Ampeg SVT amplifier "head" on top.
A Yamaha B100-115 combo amp, which contains a 100 watt amplifier and one 15" speaker in a wooden cabinet.
A Hartke 500 watt amp "head" on top of an Ashdown 4x10" speaker cabinet.
A 1930s era combo amplifier and a Rickenbacker electric upright bass from 1935.
An instrument amplifier is an electronic device that converts the often barely audible or purely electronic signal of a musical instrument into a larger electronic signal to feed to a loudspeaker. An instrument amplifier is used with musical instruments such as an electric guitar, an electric bass, electric organ, electric piano, synthesizers and drum machine to convert the signal from the pickup or other sound source into an electronic signal that has enough power, due to being routed through a power amplifier, capable of driving one or more loudspeaker that can be heard by the performers and audience.
A Fender "combo" amplifier. The combination amplifier is a preamplifier, power amplifier and tone controls and one or more loudspeakers or drivers mounted in a portable wooden cabinet. This amp's sound is being picked up with a microphone in a recording studio.
A Vox AC30 used by The Beatles
A small Gibson "combo" amplifier.
A 3×6 stack of mock Marshall guitar cabinets for Jeff Hanneman of Slayer
