Model

Ampeg B-15 Portaflex

Flip-top tube bass combo amplifier

The Ampeg B-15 Portaflex, introduced in 1960, was the first combo amplifier built specifically for bass. It is an all-tube flip-top design with a single 15-inch speaker, prized for warm, round studio bass tone and used on countless recordings.

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  • Ampeg

    Ampeg is a United States amplifier manufacturer founded in 1946 and best known as a defining name in bass amplification. Its products include the all-tube 300-watt SVT, introduced in 1969, and the B-15 Portaflex flip-top combo, the first amplifier built specifically for bass.

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