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"Why it would be labeled as both?"

Prolly to indicate that this tube CAN be used in units that have either EL34 or 6CA7 as OEM tubes.

I have a bunch of GE 7581A that are labeled KT-66/7581A.

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  • "Why it would be labeled as both?" - FenderLover 18:01:40 11/03/16 (0)
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