Vox JMI AC 30 T Super Twin Treble model

Vox JMI AC 30 T  factory made Treble amp. Original transformers and blue Vox Speakers. Manufactured in Dartford Road factory. 
Super Twin refers to Super, being separate head and cabinet, Twin, for two speakers 
In 1964 the AC30 T model came direct from the Vox factory as a Treble model,
Arguably amongst Vox aficionado's, the best sounding of the range. 

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, depicted by a combination of JMI Vox schematics OS-065 and OS-010.

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.
.Brian May of Queen prefers his AC-30 amps without Top Boost. He uses external devices to develop his tone.

The AC-30/6 Twin had three channels, Brilliant, Normal, and Vib-Trem. If fitted with the Top Boost modification, the added Bass and Treble controls only affected the Brilliant channel. The Tone control affected all three channels.

Four ECC83, one ECC82, one GZ-34 and four EL-84 tubes were used in the Treble, Bass, and Normal versions of the AC-30/6. 

Check out the sound clip! 

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