No. of Channels
Two-Channel
Amp Type
Tube
Inputs
Five inputs (two per channel and one for stereo)
Outputs
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- 50W, 1-15 in. speaker with a horn tweeter and 2-4 in. "echo" speakers, multi-purpose piggyback/combo Portaflex design, 10-tube chassis: preamp: 1 X 6SL7, 1 X 6SN7, 1 X 7199, 2 X 6D10, 1 X 7591, power: 2 X 7027A, 1 X 6V6, rectifier: 5AR4, two channels, vibrato, reverb, front chrome control panel, five inputs (two per channel and one for stereo), nine knobs (Ch. 1: v, t, b, echo dimension [reverb], s, i, Ch. 2: v, t, b), footswitch jack, rear panel: power switch, ground switch, standby switch, extension speaker jack, echo speaker jack, extension amplifier jack, illuminated lucite panel with Ampeg logo and optional owner's monogram, two-button footswitch, available in Blue Check covering with a gray grille, mfg. 1964-67.
This model was also available with a Lansing speaker and called the B-15XL.
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- 60W, 1-15 in. speaker, Portaflex design, six-tube chassis, pre-amp: 2 X 12AX7, 1 X 12DW7, 1 X 12AU7, power: 2 X 7027A, solid-state rectifier, front silver control panel, four input jacks (two per channel), seven knobs (three-position resp...
- 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, 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...
- 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...
- 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...
- 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 inp...
- 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...
- 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.
