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The 5814 is a dual triode. It is a high-rel version of the 12AU7 (ECC82) with increased heater current.

It has a 12.6 V, 175 mA center-tapped filament and a B9A (Noval) miniature 9-pin base.

Tek part number: 154-0054-00 (5814A), 154-0316-00 (5814A?)

Used in

Aged/Checked/Matched Pair Details
Used in Tek Part# S/N Range
Type D Plug-in (V3404,V3454) 157-0036-00 All

157-0036-00 has been replaced by 157-0049-00


Tube aging procedure / Selection and checking procedure