No. of Channels
Single-Channel
Amp Type
Tube
Inputs
Two inputs
Outputs
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- 25W, 1-12 in. Jensen C12N speaker, multi-purpose combo/piggyback Portaflex design, five-tube chassis: pre-amp: 2 X 12AX7, power: 2 X 7868/7591A (early models)or 2 X 6L6GC (later models), single channel, front silver control panel, two inputs, three knobs (v, b, t), power switch, standby switch, available in Blue Check covering with a gray grille (1965-67) or black vinyl covering with a blue/silver grille (1967-1971), mfg. 1965-1971.
This was a close but not an exact replacement for the B-12N. This amp was specifically designed for the Ampeg Baby Bass.
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- similar to the B-12X Portaflex, except had a revised circuit with a 6D10 preamp tube replacing the 6SL7, a 7591A power tube replacing the 6V6 for the reverb unit, and 2 X 7027A power tubes for the main unit, and output raised from 30W to...
- 50W, 1-15 in. speaker, Portaflex design, six-tube chassis, preamp: 3 X 6SL7, power: 2 X 6L6GC, rectifier: 5AR4, front silver control panel, four input jacks (two per channel), six knobs (Ch. 1: v, b, t, Ch. 2: v, b, t), ultra high boost a...
- 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.
- 30W, 1-12 in. speaker and either an oval 4 X 8 in. speaker or 2-4 in. speakers enclosed in a separate cabinet for echo, multi-purpose piggyback/combo Portaflex design, 10-tube chassis: preamp: 5 X 6SL7, 1 X 6SN7, power: 2 X 6L6GC, 1 X 6V6...
- 50W, 2-12 in. Jensen speakers, guitar/accordion 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...
- 50W, 1-15 in. speaker mounted in a regular cabinet and 1-15 in. speaker mounted in an extension cabinet, Portaflex design, five tube chassis, pre-amp: 2 X 6SL7, 1 X 7199, power: 2 X 7027A, rectifier: 5AR4, two channels, front chrome contr...
- 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.
- 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, fr...
