Gallien-Krueger
Corporate brand
UnclaimedGallien-Krueger is a U.S. bass amplifier manufacturer founded by Robert Gallien, whose first amplifier was made in his garage in 1968.
Last updated September 15, 2026
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Overview
Gallien-Krueger (GK) designs and manufactures bass amplifiers and related products. According to the company, Robert Gallien walked into his local music store in 1968 carrying an amplifier he had made in his garage; the storeowner was impressed, and a local club musician named Carlos Santana bought it the next day and took it to Woodstock. The company states it has been on the leading edge of bass amp design and technology for over 50 years, and that Bob Gallien is still designing products. GK describes itself as maintaining uninterrupted U.S. production for over 40 years. Its product catalog includes speaker drivers, rack kits, foot switches, cables, dust covers, gig bags, and rolling racks.
History
Gallien-Krueger's history begins in 1968, when Robert Gallien walked into his local music store carrying an amplifier he had made in his garage. The amplifier had a unique design that impressed the storeowner as well as a local club musician named Carlos Santana, who bought it the next day and took it to Woodstock. The company states that Gallien-Krueger has been on the leading edge of bass amp design and technology for over 50 years, and that Bob Gallien is still designing products. It also states that it has maintained uninterrupted U.S. production for over 40 years. GK lists innovations including the 1969 GMT 226A, described as the most powerful amp of its day, which went to Woodstock with Santana; the 1971 GMT 600B, described as the first instrument amp in a metal enclosure, which became a favorite bass amp of groups like Led Zeppelin; the 1974 GMT 200G, described as the first guitar amp with channel switching; and the 1975 GK 400B, described as the first bass amp with Contour.
Products and positioning
Leading edge of bass amp design and technology; choice of legendary bass artists; uninterrupted U.S. production for over 40 years.
GMT 226A
Described as the most powerful amp of its day; went to Woodstock with Santana in 1969.
GMT 600B
Described as the first instrument amp in a metal enclosure; became the favorite bass amp of groups like Led Zeppelin in 1971.
GMT 200G
Described as the first guitar amp with channel switching in 1974.
GK 400B
Described as the first bass amp with Contour in 1975.
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