Quad QA-12-P

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General information[contribute]

The Quad QA-12-P is a integrated amplifier in the valve amplifier category. It was manufactured from 1949 to 1951.

TAC (October 18, 2011): Quad QA/12P integrated amplifier. 1.000 units sold.

Griffon Consulting web site (October 2001): The precursor of the famous Q.U.A.D. amplifiers, the QA-12-P made its debut in January, 1948 in Wireless World. This was a "tweaked" version of the QA12 and aimed at domestic consumers rather than P.A. use. As you can see from the specifications, it isn't that far off from the later IIs! Interestingly, this is the one example of a vertical pre-amp made by Quad.

The later Quad Is used a similar unit to the later QC-22. The amplifier itself is strikingly similar to the later Q.U.A.D. (Quad Is). It is likely, from these figures, that the output circuit is the "acoustical" one developed by Peter Walker. Certainly, the performance figures are rather better than those of the C25.

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