AMPEG B-18X PORTAFLEX Description
- 50W, 1-18 in. Fane speaker with a Jensen mid-range horn, keyboard/guitar/bass combo/piggyback Portaflex design, nine-tube chassis, preamp: 4 X 12AX7, 1 X 6CG7, 1 X 7199, power: 2 X 7027A, rectifier: 5AR4, two channels, vibrato, reverb, front chrome control panel, four input jacks (two per channel), 10 black knobs (Ch. 1: v, t, b, Ch. 2: v, t, b, i, s, r, reverb channel selector), footswitch jack, rear panel: standby switch, ground switch, power switch, input for 8 ohm extension speaker, output jack for external amplifier, hum balance control, illuminated lucite panel with Ampeg logo and optional owner's monogram, available in Blue Check covering with a gray grille (1966-67) or black covering with a blue/gray grille with chrome trim (1967-68), mfg. 1966-68.