Mullard Holland ECC83 / 12AX7 Valve/Tube Long 17mm Ladder Plates & D Getter Tests Good Avo Guide of a New Tube : Ia 1.2 / Gm 1.6 A1) Ia 0.8 / Gm 1.3 A2) Ia 0.7 / Gm 1.2 Balanced Supplied in Plain Box Please Bid Accordingly As Per Photo
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