Brownface Vibroverb® Style Guitar Tube Amp Kit

Mojotone is excited to introduce a new kit to our brownface lineup - the 6G16 Vibroverb. We're offering everything needed to build an accurate replica from the finger-joint constructed pine cabinet to the tapped 350k treble potentiometers. You'll be pleased to have such a rare bird in your collection. As with any of our kits, you get the finest components available.

The original (6G16 circuit) Vibroverb was introduced in February 1963. The speaker lineup and the output transformer were based on the Super amp of the time and the circuit based on the Vibrolux of the time, with no presence control and only one 12AX7 tube for the tremolo effect. It sported typical brownface cosmetics, with brown Tolex covering (introduced in 1959), and wheat-colored speaker cloth.

The 40 Watt amplifier boasted two channels (NORMAL and BRIGHT). Both channels had VOLUME, TREBLE and BASS controls; the single-control REVERB affected only the BRIGHT channel.

The tremolo effect (labeled Vibrato) had two controls, SPEED and also INTENSITY, which affected the bias of the output tubes and therefore both channels. To make room for the reverb circuitry (not found on the Super amp) a direct-coupled oscillator vibrato circuit was used which was found on the previous generation tweed amplifiers (which used two tubes fewer than the Super’s brownface vibrato circuit).

The TREBLE control was the same as found in many Fender amplifiers of the time (i.e., Pro Amp -6G5A-, the Super -6G4A-, the Showman -6G14-, the Vibrolux -6G11-). It was fitted with a tapped treble circuit, meaning that the treble control is flat at setting 5; cutting or boosting the treble was possible by turning the knob down (below 5) or up (above 5), respectively.

This incarnation of the Vibroverb was made for only a few months, and it is thought that fewer than 600 of these units were made.

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Please read our article 'Mojotone Amp Kit Building Primer' along with our amp kit disclaimer located in the Specs tab before buying this kit.