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|Description=dual triode
|Description=dual triode
|Used_in=3C66
|Used_in=3C66
}} with one high-µ system similar to a [[12AX7]]/[[ECC83]], and one low-µ system like the [[12AU7]]/[[ECC82]].
}} with one high-µ section similar to a [[12AX7]]/[[ECC83]], and one low-µ section like the [[12AU7]]/[[ECC82]] with a {{B9A base}}.
It has a center-tapped 12.6 V / 150 mA heater that can be run in parallel at 6.3 V / 300 mA.


==Data==
==Data==