• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

studiogear of the beatles

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I read in a paper that a book has been published about the technical side of the way the Beatles produced their records. The article said that the custom (tube)amps made by EMI engineers are still top of the bill.
Has anybody access to more information about those tube-amps. It would be nice to see a schematic for instance. Those engineers are not all dead I suppose ? :smash:
 
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