1 Pcs ECC81 12AT7 NOS O Triode Lorenz/Siemens TubeThe Photos listed above are of actual Tubes which you are buyingTested with Russian L1-3 Tube tester. Where 110ma is 100% by the Test card. Where 100% is Ia = 1,00mA / 100 on scaleYou can choose a pair from the whole lot.Test Condition:
Uf = 12,6V
Ua = 250V
Ug1 = - 2V
NOTE:
Returns