- 50W, 1-12 in. speaker, guitar combo, nine tube chassis, preamp: 5 X 7025, power: 4 X EL84, two channels, reverb, gain, front black control panel, two inputs (hi and lo), eleven black and white control knobs (Ch. 1: v, b, m, t, Ch. 2: gain, b, m, t, v, Both: r, MV), effects loop, extension speaker jack, headphone jack, black covering, black grille, mfg. 1984-87.