Vox 1965 'King of the Beat' catalogue, page 8. Four Thomas Organ (California) Vox tube amps are shown here - built before Thomas Organ switched production exclusively to solid state amps. These are the: Vox Student V-5 (2w, 1x8" speaker, only available in 1965), Pathfinder V-1 (US version of the JMI AC4, 7w, 1x8" speaker), Berkeley V-8 (similar circuitry to an AC15, separate head and cab, 18w, 2x10" speakers) and Pacemaker V-2 (17w 1x10" combo).
The Vox Berkeley is described as follows:
High quality amplifier incorporating variable length reverberation and multi-speed variable depth vibrato. Two inputs, separate tone and volume controls. Amplifier and loudspeaker units are in separate cabinets to give greater power without feed back.