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the 5xxA scopes.  Its last year was 1968.
the 5xxA scopes.  Its last year was 1968.


[[Lavoie Laboratories]] produced an unauthorized clone, the [[Lavoie LA-265-D]].
==Internals==
Some production used a pair of [[5814]] tubes at the input while others used [[12AU7]]'s.
Some production used a pair of [[5814]] tubes at the input while others used [[12AU7]]'s.
These two tube types have different heater currents, and because the heaters are
These two tube types have different heater currents, and because the heaters are