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Wright WLA12 / WLA12A Topology

Does anyone know what topology was used in the George Wright WLA12/A line preamplifier? It uses a 6X5 rectifier, 6EM7 as a series high voltage regulator, and two 6SN7s for what his old website describes as the "voltage and driver stages."

Does "voltage and driver" stage have a particular meaning? Two grounded cathode stages perhaps?

I'm trying to understand the differences between common preamp topologies (SRPP, mu follower, cathode follower, grounded grid, etc.), and the WLA12 is the only one I've ever heard. Trying to match experience with book learning here.

Thanks!

Jeff


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Topic - Wright WLA12 / WLA12A Topology - jdrouin 20:11:03 03/21/17 (6)

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