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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 | ||