one pair National Gold Line 12AX7 ECC83 tested strong

NOS & NIB

READINGS

measurements were made on a precisely calibrated Metrix U61DM with Va 250V, and -Vg1 2V

tube 1 Ia 1.8mA & 1.3mA
tube 2 Ia 1.5mA & 1.4mA

where a new tube gives 1.2mA with Va 250V, and -Vg1 2V

worldwide shipping with tracking in well made postal small parcel with and delivery against signature for 9 euros.

possibility of grouping the delivery, see my other ads.

Important Reminders: “You will get what you see in the pictures"