Good testing & balanced vintage ECC83 / 12AX7 Siemens tube, O getter, NEUF.

La radiotechnique Chartres France factory etched code: I63  ±9D  =  April 1969.

Tube NOS (new old stock), NIB (new in box).

Tous les tubes ont été controlés bons sur analyseur Metrix LX109A (Courant anode Ia, pente S, gaz, court-circuits),

Test results:

@ Vp = 250V / Vg1 = -2V :

Triode 1: Ia = 1,22 mA / S = 1,66 mA/V      

Triode 2: Ia = 1,25 mA / S = 1,65 mA/V

(100% :   Ia = 1,20 mA / S = 1,60 mA/V)           

Garantie satisfait ou remboursé.

Registered shipping (with Tracking number), we combine shipping, just ask before paying.