Very good condition VOX AC30/6 Bass from 1963. All original except replacement handles. Servicing up to date
History of the AC30/6 - The AC30/6 was produced in four different versions, as documented by Vox service schematics for the amp. JMI Vox schematic OS-056 depicted the "Treble" version of this amp. Schematic OS-057 was the "Bass" version, and OS-065 was the "Normal" version. The final version was the "Top Boost " version, which added separate bass and treble controls to the "Brilliant" channel. This model was depicted by a combination of JMI Vox schematics OS-065 and OS-010.
Early "Top Boost" models had these controls mounted to a recessed plate in the upper back of the cabinet. Later versions moved the treble and bass controls to the main control panel.
The electronic differences between the AC-30 Treble, Bass and Normal amps are extremely minor. The values of only two tone voicing capacitors, C3 and C10, are affected.