The instrument
The Viscount Reverb and Tube amplifier was probably launched in 1965 as an amplifier for guitars. It was manufactured in the same factory as the Vox speaker amplifiers.
Details
The Viscount Reverb and Amplifier has two channels: Channel 1 with knobs for volume, alti, medi bassi, intensity, channel 2 with alti, medi bassi and volume. There is vibrato with intensity and velocity based on an oscillator for two vibrato controls. 10 tubes are used for sound generation.