Ampeg B-15N Portaflex
The flip-top Portaflex series of the '60s stands as one of Ampeg's most recognizable designs, and the B-15N is the definitive central model of the line. Portaflex amps were hugely innovative for the flip-top nature of the head and cabinet, as well as for a number of innovative signal and circuitry innovations from the early '60s. The B-15N spawned a number of variations through the decade including the B-15NB and B-15NC.
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