AMPEG B-15NB Portaflex
- similar to the B-15N Portaflex, except had a slightly revised preamp/power amp circuit and a solid-state rectifier, available in Blue Check covering with a gray grille cloth, mfg. 1962-64.
No. of Channels
Two-Channel
Amp Type
Tube
Inputs
--
Outputs
--
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- similar to the B-15NB Portaflex, except utilized a printer circuit board and the solid-state rectifier was replaced by a 5AR4 rectifier tube, available in Blue Check covering with a gray grille cloth, mfg. late 1964-mid-1965.
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- similar to the B-15N Portaflex, except had a slightly revised preamp/power amp circuit and a solid-state rectifier, available in Blue Check covering with a gray grille cloth, mfg. 1962-64.
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